suse-su-2023:1711-1
Vulnerability from csaf_suse
Published
2023-03-31 11:33
Modified
2023-03-31 11:33
Summary
Security update for curl

Notes

Title of the patch
Security update for curl
Description of the patch
This update for curl fixes the following issues: - CVE-2023-27533: Fixed TELNET option IAC injection (bsc#1209209). - CVE-2023-27534: Fixed SFTP path ~ resolving discrepancy (bsc#1209210). - CVE-2023-27535: Fixed FTP too eager connection reuse (bsc#1209211). - CVE-2023-27536: Fixed GSS delegation too eager connection reuse (bsc#1209212). - CVE-2023-27538: Fixed SSH connection too eager reuse still (bsc#1209214). - CVE-2023-23916: Fixed HTTP multi-header compression denial of service (bsc#1207992).
Patchnames
SUSE-2023-1711,SUSE-SLE-Product-RT-15-SP3-2023-1711,SUSE-SUSE-MicroOS-5.1-2023-1711,SUSE-SUSE-MicroOS-5.2-2023-1711
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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          "text": "An allocation of resources without limits or throttling vulnerability exists in curl \u003cv7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable \"links\" in this \"decompression chain\" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a \"malloc bomb\", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.",
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        {
          "cvss_v3": {
            "baseScore": 4.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
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        {
          "category": "impact",
          "date": "2023-03-31T11:33:10Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-27534"
    },
    {
      "cve": "CVE-2023-27535",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-27535"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "An authentication bypass vulnerability exists in libcurl \u003c8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.",
          "title": "CVE description"
        }
      ],
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-27535",
          "url": "https://www.suse.com/security/cve/CVE-2023-27535"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1209211 for CVE-2023-27535",
          "url": "https://bugzilla.suse.com/1209211"
        }
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      "title": "CVE-2023-27535"
    },
    {
      "cve": "CVE-2023-27536",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-27536"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "An authentication bypass vulnerability exists libcurl \u003c8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.",
          "title": "CVE description"
        }
      ],
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    {
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        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-27538"
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        {
          "category": "general",
          "text": "An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.",
          "title": "CVE description"
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            "SUSE Linux Enterprise Micro 5.2:libcurl4-7.66.0-150200.4.52.1.aarch64",
            "SUSE Linux Enterprise Micro 5.2:libcurl4-7.66.0-150200.4.52.1.s390x",
            "SUSE Linux Enterprise Micro 5.2:libcurl4-7.66.0-150200.4.52.1.x86_64",
            "SUSE Linux Enterprise Real Time 15 SP3:curl-7.66.0-150200.4.52.1.x86_64",
            "SUSE Linux Enterprise Real Time 15 SP3:libcurl-devel-7.66.0-150200.4.52.1.x86_64",
            "SUSE Linux Enterprise Real Time 15 SP3:libcurl4-32bit-7.66.0-150200.4.52.1.x86_64",
            "SUSE Linux Enterprise Real Time 15 SP3:libcurl4-7.66.0-150200.4.52.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2023-03-31T11:33:10Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-27538"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.