suse-su-2019:0787-1
Vulnerability from csaf_suse
Published
2019-03-28 10:22
Modified
2019-03-28 10:22
Summary
Security update for openssl-1_1

Notes

Title of the patch
Security update for openssl-1_1
Description of the patch
This update for openssl-1_1 (OpenSSL Security Advisory [6 March 2019]) fixes the following issues: Security issue fixed: - CVE-2019-1543: Fixed an implementation error in ChaCha20-Poly1305 where it was allowed to set IV with more than 12 bytes (bsc#1128189).
Patchnames
SUSE-2019-787,SUSE-SLE-DESKTOP-12-SP4-2019-787,SUSE-SLE-SDK-12-SP4-2019-787,SUSE-SLE-SERVER-12-SP4-2019-787
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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    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
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        "text": "Security update for openssl-1_1",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for openssl-1_1 (OpenSSL Security Advisory [6 March 2019]) fixes the following issues:\n\t \nSecurity issue fixed: \t  \n\n- CVE-2019-1543: Fixed an implementation error in ChaCha20-Poly1305 where it was allowed\n  to set IV with more than 12 bytes (bsc#1128189). \n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-2019-787,SUSE-SLE-DESKTOP-12-SP4-2019-787,SUSE-SLE-SDK-12-SP4-2019-787,SUSE-SLE-SERVER-12-SP4-2019-787",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
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        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2019_0787-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2019:0787-1",
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      },
      {
        "category": "self",
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      },
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        "url": "https://www.suse.com/security/cve/CVE-2019-1543/"
      }
    ],
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  "vulnerabilities": [
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      "cve": "CVE-2019-1543",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2019-1543"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input for every encryption operation. RFC 7539 specifies that the nonce value (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length and front pads the nonce with 0 bytes if it is less than 12 bytes. However it also incorrectly allows a nonce to be set of up to 16 bytes. In this case only the last 12 bytes are significant and any additional leading bytes are ignored. It is a requirement of using this cipher that nonce values are unique. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks. If an application changes the default nonce length to be longer than 12 bytes and then makes a change to the leading bytes of the nonce expecting the new value to be a new unique nonce then such an application could inadvertently encrypt messages with a reused nonce. Additionally the ignored bytes in a long nonce are not covered by the integrity guarantee of this cipher. Any application that relies on the integrity of these ignored leading bytes of a long nonce may be further affected. Any OpenSSL internal use of this cipher, including in SSL/TLS, is safe because no such use sets such a long nonce value. However user applications that use this cipher directly and set a non-default nonce length to be longer than 12 bytes may be vulnerable. OpenSSL versions 1.1.1 and 1.1.0 are affected by this issue. Due to the limited scope of affected deployments this has been assessed as low severity and therefore we are not creating new releases at this time. Fixed in OpenSSL 1.1.1c (Affected 1.1.1-1.1.1b). Fixed in OpenSSL 1.1.0k (Affected 1.1.0-1.1.0j).",
          "title": "CVE description"
        }
      ],
      "product_status": {
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2019-1543",
          "url": "https://www.suse.com/security/cve/CVE-2019-1543"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1128189 for CVE-2019-1543",
          "url": "https://bugzilla.suse.com/1128189"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1141801 for CVE-2019-1543",
          "url": "https://bugzilla.suse.com/1141801"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1154162 for CVE-2019-1543",
          "url": "https://bugzilla.suse.com/1154162"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.0"
          },
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2019-03-28T10:22:59Z",
          "details": "low"
        }
      ],
      "title": "CVE-2019-1543"
    }
  ]
}


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