CWE-407

Inefficient Algorithmic Complexity

An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

CVE-2019-19331 (GCVE-0-2019-19331)
Vulnerability from cvelistv5
Published
2019-12-16 00:00
Modified
2024-08-05 02:16
CWE
Summary
knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).
Impacted products
Vendor Product Version
CZ.NIC knot-resolver Version: 4.3.0
Create a notification for this product.
Show details on NVD website


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CVE-2020-27223 (GCVE-0-2020-27223)
Vulnerability from cvelistv5
Published
2021-02-26 21:55
Modified
2024-08-04 16:11
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.
References
https://bugs.eclipse.org/bugs/show_bug.cgi?id=571128 x_refsource_CONFIRM
https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7 x_refsource_CONFIRM
https://lists.apache.org/thread.html/r5612dc69e1f79c421faf9764ffbc92591e2a69ea417c04cba57f49ea%40%3Cuser.karaf.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rd8e24a3e482e5984bc8c5492dc790413e4fdc1234e3debb94515796b%40%3Cjira.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r35ab810c0f3016b3fd3a3fa9088a2d2781b354a810780ce74d022b6c%40%3Cdev.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r2c2c7b2971360fb946bbf062c58d7245927dd1ce9150fc9987f65409%40%3Cjira.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r1b7ed296a865e3f1337a96ee9cd51f6d154d881a30da36020ca72a4b%40%3Cjira.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rc052fd4e9e9c01bead74c0b5680355ea5dc3b72d46f253cb65d03e43%40%3Ccommits.druid.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rdd6c47321db1bfe12c68a898765bf3b6f97e2afa6a501254ed4feaed%40%3Cjira.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/ra47a26c008487b0a739a368c846e168de06c3cd118d31ecedafa679a%40%3Cdev.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r7fbdb7880be1566f943d80fbbeefde2115c086eba1bef3115350a388%40%3Cjira.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rff630ce92a4d1bb494fc1a3f9b57a3d60819b436505bcd8c6ccc713c%40%3Ccommits.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/ra384892bab8c03a60613a6a9d5e9cae0a2b800fd882792a55520115e%40%3Ccommits.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r562a0cbc5c8cac4d000a27b2854a8ab1b924aa9dd45f8ffbea98e5ad%40%3Cjira.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/re819198d4732804dc01fca8b5b144689a118ede49f6128968773595c%40%3Ccommits.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r0e25cdf3722a24c53049d37396f0da8502cb4b7cdc481650dc601dbc%40%3Cgitbox.activemq.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/rb79b62ac3085e05656e41865f5a7efcbdc7dcd7843abed9c5fe0fef8%40%3Cnotifications.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/r5b7cc6ac733e0b35816751cf45d152ae246a3f40e0b1e62b101c9522%40%3Cdev.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/re43768896273c0b5f1a03d7f0a9d370852074489d51825fdc0d77f0f%40%3Cnotifications.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r75ee2a529edb892ac59110cb3f6f91844a932c5034e16c8317f5668d%40%3Ccommits.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r7f4ad5eec0bce2821c308bb23cac53df5c94eb84de1c58de9b95c176%40%3Ccommits.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/ra40a88a2301a3da86e25b501ff4bc88124f2b816c2917d5f3497f8f0%40%3Cnotifications.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/re19fa47ec901cc3cf6d7784027198e8113f8bc2dbfd6c9d6d13f5447%40%3Cnotifications.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/re03a4dbc15df6f390a2f8c0a071c31c8324dbef007e59fdc2592091a%40%3Ccommits.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r51f8975ef47c12a46fbfd7da9efea7f08e1d307fe1dc3042514659ae%40%3Cnotifications.zookeeper.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/r1b803e6ebdac5f670708878fb1b27cd7a0ce9d774a60e797e58cee6f%40%3Cissues.nifi.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/re0d38cc2b5da28f708fc89de49036f3ace052c47a1202f7d70291614%40%3Cdev.kafka.apache.org%3E x_refsource_MISC
https://lists.apache.org/thread.html/r601f15f3de7ae3a7bbcd780c19155075c56443c2cdc1d193c03b4182%40%3Cissues.spark.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/ra2f529da674f25a7351543544f7d621b5227c49a0745913b1194d11e%40%3Creviews.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r4a456d89a83752a012d88a60ff4b21def6c9f650b9e69ea9fa11c9f9%40%3Cissues.spark.apache.org%3E mailing-list, x_refsource_MLIST
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https://lists.apache.org/thread.html/r105f4e52feb051faeb9141ef78f909aaf5129d6ed1fc52e099c79463%40%3Cissues.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r27ad7843d060762cc942820566eeaa9639f75371afedf8124b943283%40%3Cissues.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rc721fe2910533bffb6bd4d69ea8ff4f36066d260dbcd2d14e041614a%40%3Cissues.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/reb3c6dc050c7ee18ea154cd94dba85d99aa6b02b84c4bb2138a4abf2%40%3Creviews.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r1414ab2b3f4bb4c0e736caff6dc8d15f93f6264f0cca5c47710d7bb3%40%3Creviews.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r2c947376491a20d1cf143bf3c21ed74113e099d806cfe4c490a45ad8%40%3Creviews.spark.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78%40%3Cissues.solr.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r855b24a3bde3674256152edfc53fb8c9000f9b59db3fecbbde33b211%40%3Cissues.solr.apache.org%3E mailing-list, x_refsource_MLIST
https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-20210401-0005/ x_refsource_CONFIRM
https://lists.apache.org/thread.html/rf190d1d28e1367d1664ef6bc2f71227566d7b6b39209817a5364da1f%40%3Cissues.solr.apache.org%3E mailing-list, x_refsource_MLIST
https://www.debian.org/security/2021/dsa-4949 vendor-advisory, x_refsource_DEBIAN
https://lists.apache.org/thread.html/r65c714241b9d064a44fec10d60ebf5a37d5ebadd6bf88b0eed13ade0%40%3Cissues.solr.apache.org%3E mailing-list, x_refsource_MLIST
Impacted products
Vendor Product Version
The Eclipse Foundation Eclipse Jetty Version: 9.4.6.v20170531   < unspecified
Version: unspecified   <
Version: 10.0.0
Version: 11.0.0
Create a notification for this product.
Show details on NVD website


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            "name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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            "name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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            "name": "[spark-issues] 20210315 [jira] [Assigned] (SPARK-34752) Upgrade Jetty to 9.4.37 to fix CVE-2020-27223",
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          "name": "[zookeeper-notifications] 20210309 [GitHub] [zookeeper] ztzg commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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              "url": "https://lists.apache.org/thread.html/r5b7cc6ac733e0b35816751cf45d152ae246a3f40e0b1e62b101c9522@%3Cdev.zookeeper.apache.org%3E"
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              "name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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              "name": "[zookeeper-notifications] 20210309 [GitHub] [zookeeper] ztzg commented on pull request #1625: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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              "name": "[zookeeper-notifications] 20210309 [GitHub] [zookeeper] ztzg commented on pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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              "name": "[zookeeper-notifications] 20210309 [GitHub] [zookeeper] arshadmohammad commented on pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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              "name": "[zookeeper-notifications] 20210310 [GitHub] [zookeeper] asfgit closed pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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              "name": "[spark-reviews] 20210315 [GitHub] [spark] xkrogen opened a new pull request #31846: [SPARK-34752] Bump Jetty to 9.4.37 to address CVE-2020-27223",
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              "name": "[spark-reviews] 20210315 [GitHub] [spark] HyukjinKwon commented on pull request #31846: [SPARK-34752][BUILD] Bump Jetty to 9.4.37 to address CVE-2020-27223",
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              "name": "[spark-reviews] 20210315 [GitHub] [spark] HyukjinKwon closed pull request #31846: [SPARK-34752][BUILD] Bump Jetty to 9.4.37 to address CVE-2020-27223",
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              "name": "[spark-reviews] 20210316 [GitHub] [spark] xkrogen commented on pull request #31846: [SPARK-34752][BUILD] Bump Jetty to 9.4.37 to address CVE-2020-27223",
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  "cveMetadata": {
    "assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
    "assignerShortName": "eclipse",
    "cveId": "CVE-2020-27223",
    "datePublished": "2021-02-26T21:55:13",
    "dateReserved": "2020-10-19T00:00:00",
    "dateUpdated": "2024-08-04T16:11:36.050Z",
    "state": "PUBLISHED"
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}

CVE-2020-3548 (GCVE-0-2020-3548)
Vulnerability from cvelistv5
Published
2024-11-18 15:53
Modified
2024-11-18 16:32
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
A vulnerability in the Transport Layer Security (TLS) protocol implementation of Cisco&nbsp;AsyncOS software for Cisco&nbsp;Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to inefficient processing of incoming TLS traffic. An attacker could exploit this vulnerability by sending a series of crafted TLS packets to an affected device. A successful exploit could allow the attacker to trigger a prolonged state of high CPU utilization. The affected device would still be operative, but response time and overall performance may be degraded.There are no workarounds that address this vulnerability.
Impacted products
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "affected": [
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            "cpes": [
              "cpe:2.3:a:cisco:secure_email:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "secure_email",
            "vendor": "cisco",
            "versions": [
              {
                "lessThanOrEqual": "13.5.1-277",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
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        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-3548",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-18T16:30:29.514984Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-18T16:32:04.999Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Secure Email",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
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            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Transport Layer Security (TLS) protocol implementation of Cisco\u0026nbsp;AsyncOS software for Cisco\u0026nbsp;Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition.\r\nThe vulnerability is due to inefficient processing of incoming TLS traffic. An attacker could exploit this vulnerability by sending a series of crafted TLS packets to an affected device. A successful exploit could allow the attacker to trigger a prolonged state of high CPU utilization. The affected device would still be operative, but response time and overall performance may be degraded.There are no workarounds that address this vulnerability."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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CVE-2022-22153 (GCVE-0-2022-22153)
Vulnerability from cvelistv5
Published
2022-01-19 00:20
Modified
2024-09-17 01:50
CWE
  • CWE-407 - Algorithmic Complexity
  • Denial of Service (DoS)
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
An Insufficient Algorithmic Complexity combined with an Allocation of Resources Without Limits or Throttling vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series and MX Series with SPC3 allows an unauthenticated network attacker to cause latency in transit packet processing and even packet loss. If transit traffic includes a significant percentage (> 5%) of fragmented packets which need to be reassembled, high latency or packet drops might be observed. This issue affects Juniper Networks Junos OS on SRX Series, MX Series with SPC3: All versions prior to 18.2R3; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2-S9, 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S1, 19.2R2.
References
https://kb.juniper.net/JSA11261 x_refsource_CONFIRM
Impacted products
Vendor Product Version
Juniper Networks Junos OS Version: unspecified   < 18.2R3
Version: 18.3   < 18.3R3
Version: 18.4   < 18.4R2-S9, 18.4R3
Version: 19.1   < 19.1R2
Version: 19.2   < 19.2R1-S1, 19.2R2
Create a notification for this product.
Show details on NVD website


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CVE-2022-36021 (GCVE-0-2022-36021)
Vulnerability from cvelistv5
Published
2023-03-01 15:46
Modified
2025-03-07 21:05
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9.
Impacted products
Vendor Product Version
redis redis Version: < 6.0.18
Version: >= 6.2.0, < 6.2.11
Version: >= 7.0.0, < 7.0.9
Create a notification for this product.
Show details on NVD website


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CVE-2023-22484 (GCVE-0-2023-22484)
Vulnerability from cvelistv5
Published
2023-01-23 22:42
Modified
2025-03-10 21:20
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to a polynomial time complexity issue in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 0.29.0.gfm.7.
Impacted products
Vendor Product Version
github cmark-gfm Version: < 0.29.0.gfm.7
Create a notification for this product.
Show details on NVD website


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CVE-2023-22486 (GCVE-0-2023-22486)
Vulnerability from cvelistv5
Published
2023-01-24 02:30
Modified
2025-03-10 21:20
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 contain a polynomial time complexity issue in handle_close_bracket that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 0.29.0.gfm.7.
Impacted products
Vendor Product Version
github cmark-gfm Version: < 0.29.0.gfm.7
Create a notification for this product.
Show details on NVD website


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CVE-2023-2473 (GCVE-0-2023-2473)
Vulnerability from cvelistv5
Published
2023-05-02 12:00
Modified
2025-01-30 14:16
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
A vulnerability was found in Dreamer CMS up to 4.1.3. It has been declared as problematic. This vulnerability affects the function updatePwd of the file UserController.java of the component Password Hash Calculation. The manipulation leads to inefficient algorithmic complexity. The attack can be initiated remotely. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-227860.
References
https://vuldb.com/?id.227860 vdb-entry, technical-description
https://vuldb.com/?ctiid.227860 signature, permissions-required
https://gitee.com/isoftforce/dreamer_cms/issues/I6WHO7 issue-tracking
Impacted products
Vendor Product Version
n/a Dreamer CMS Version: 4.1.0
Version: 4.1.1
Version: 4.1.2
Version: 4.1.3
Show details on NVD website


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CVE-2023-24824 (GCVE-0-2023-24824)
Vulnerability from cvelistv5
Published
2023-03-31 22:01
Modified
2025-02-11 17:19
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `>` or `-` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.
Impacted products
Vendor Product Version
github cmark-gfm Version: < 0.29.0.gfm.10
Create a notification for this product.
Show details on NVD website


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CVE-2023-26485 (GCVE-0-2023-26485)
Vulnerability from cvelistv5
Published
2023-03-31 22:01
Modified
2025-02-11 17:20
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `_` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources. ### Impact A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. ### Proof of concept ``` $ ~/cmark-gfm$ python3 -c 'pad = "_" * 100000; print(pad + "." + pad, end="")' | time ./build/src/cmark-gfm --to plaintext ``` Increasing the number 10000 in the above commands causes the running time to increase quadratically. ### Patches This vulnerability have been patched in 0.29.0.gfm.10. ### Note on cmark and cmark-gfm XXX: TBD [cmark-gfm](https://github.com/github/cmark-gfm) is a fork of [cmark](https://github.com/commonmark/cmark) that adds the GitHub Flavored Markdown extensions. The two codebases have diverged over time, but share a common core. These bugs affect both `cmark` and `cmark-gfm`. ### Credit We would like to thank @gravypod for reporting this vulnerability. ### References https://en.wikipedia.org/wiki/Time_complexity ### For more information If you have any questions or comments about this advisory: * Open an issue in [github/cmark-gfm](https://github.com/github/cmark-gfm)
Impacted products
Vendor Product Version
github cmark-gfm Version: < 0.29.0.gfm.10
Create a notification for this product.
Show details on NVD website


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        "metrics": [
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              "content": {
                "id": "CVE-2023-26485",
                "options": [
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                  },
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                  },
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                "timestamp": "2025-02-11T17:20:05.803675Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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          "product": "cmark-gfm",
          "vendor": "github",
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          "lang": "en",
          "value": "cmark-gfm is GitHub\u0027s fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `_` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.\n\n\n\n\n### Impact\n\nA polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service.\n\n### Proof of concept\n\n```\n$ ~/cmark-gfm$ python3 -c \u0027pad = \"_\" * 100000; print(pad + \".\" + pad, end=\"\")\u0027 | time ./build/src/cmark-gfm --to plaintext\n```\n\nIncreasing the number 10000 in the above commands causes the running time to increase quadratically.\n\n### Patches\n\nThis vulnerability have been patched in 0.29.0.gfm.10.\n\n### Note on cmark and cmark-gfm\n\nXXX: TBD\n\n[cmark-gfm](https://github.com/github/cmark-gfm) is a fork of [cmark](https://github.com/commonmark/cmark) that adds the GitHub Flavored Markdown extensions. The two codebases have diverged over time, but share a common core. These bugs affect both `cmark` and `cmark-gfm`. \n\n### Credit\n\nWe would like to thank @gravypod for reporting this vulnerability.\n\n### References\n\nhttps://en.wikipedia.org/wiki/Time_complexity\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [github/cmark-gfm](https://github.com/github/cmark-gfm)\n"
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            "confidentialityImpact": "NONE",
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            "privilegesRequired": "NONE",
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        },
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              "description": "CWE-407: Inefficient Algorithmic Complexity",
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      "source": {
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        "discovery": "UNKNOWN"
      },
      "title": "Quadratic complexity may lead to a denial of service in cmark-gfm"
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-26485",
    "datePublished": "2023-03-31T22:01:16.350Z",
    "dateReserved": "2023-02-23T23:22:58.575Z",
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    "state": "PUBLISHED"
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}

No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.

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