RHSA-2021:2569

Vulnerability from csaf_opensuse - Published: 2021-06-29 00:00 - Updated: 2026-09-20 11:15
Summary
security update for libxml2
Severity
Moderate
Notes
Title of the patch: security update for libxml2
Description of the patch: This security update provides a functional equivalent of RHSA-2021:2569. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2021:2569.
Patchnames: RHSA-2021:2569
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2021-3516
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2021-3517
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected products
Recommended 5 products, the same list as for CVE-2021-3516
Threats
Impact important
CVE-2021-3518
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 5 products, the same list as for CVE-2021-3516
Threats
Impact moderate
CVE-2021-3537
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 5 products, the same list as for CVE-2021-3516
Threats
Impact important
CVE-2021-3541
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 5 products, the same list as for CVE-2021-3516
Threats
Impact moderate
References
To clipboard 

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      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-06-29T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2021-3518"
    },
    {
      "cve": "CVE-2021-3537",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-3537"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
          "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
          "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
          "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
          "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2021-3537",
          "url": "https://www.suse.com/security/cve/CVE-2021-3537"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1185698 for CVE-2021-3537",
          "url": "https://bugzilla.suse.com/1185698"
        }
      ],
      "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",
          "product_ids": [
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-06-29T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-3537"
    },
    {
      "cve": "CVE-2021-3541",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-3541"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
          "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
          "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
          "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
          "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2021-3541",
          "url": "https://www.suse.com/security/cve/CVE-2021-3541"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1186015 for CVE-2021-3541",
          "url": "https://bugzilla.suse.com/1186015"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1267878 for CVE-2021-3541",
          "url": "https://bugzilla.suse.com/1267878"
        }
      ],
      "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",
          "product_ids": [
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.i686",
            "SUSE Liberty Linux 8:libxml2-devel-0:2.9.7-9.el8_4.2.x86_64",
            "SUSE Liberty Linux 8:python3-libxml2-0:2.9.7-9.el8_4.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-06-29T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2021-3541"
    }
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.