suse-su-2025:3842-1
Vulnerability from csaf_suse
Published
2025-10-28 16:39
Modified
2025-10-28 16:39
Summary
Security update for python-Authlib

Notes

Title of the patch
Security update for python-Authlib
Description of the patch
This update for python-Authlib fixes the following issues: - CVE-2025-62706: fixed a denial of service condition (bsc#1252504, gh#authlib/authlib@e0863d512931)
Patchnames
SUSE-2025-3842,SUSE-SLE-Module-Python3-15-SP6-2025-3842,SUSE-SLE-Module-Python3-15-SP7-2025-3842,openSUSE-SLE-15.6-2025-3842
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": "moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
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        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
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        "text": "Security update for python-Authlib",
        "title": "Title of the patch"
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        "text": "This update for python-Authlib fixes the following issues:\n\n  - CVE-2025-62706: fixed a denial of service condition  (bsc#1252504, gh#authlib/authlib@e0863d512931)\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
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        "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",
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      "name": "SUSE Product Security Team",
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    },
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        "summary": "SUSE ratings",
        "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-2025_3842-1.json"
      },
      {
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      },
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    "title": "Security update for python-Authlib",
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      "revision_history": [
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          "date": "2025-10-28T16:39:39Z",
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          "text": "https://www.suse.com/security/cve/CVE-2025-62706"
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      ],
      "notes": [
        {
          "category": "general",
          "text": "Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib\u0027s JWE zip=DEF path performs unbounded DEFLATE decompression. A very small ciphertext can expand into tens or hundreds of megabytes on decrypt, allowing an attacker who can supply decryptable tokens to exhaust memory and CPU and cause denial of service. This issue has been patched in version 1.6.5. Workarounds for this issue involve rejecting or stripping zip=DEF for inbound JWEs at the application boundary, forking and add a bounded decompression guard via decompressobj().decompress(data, MAX_SIZE)) and returning an error when output exceeds a safe limit, or enforcing strict maximum token sizes and fail fast on oversized inputs; combine with rate limiting.",
          "title": "CVE description"
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      ],
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      "scores": [
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          "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"
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          "date": "2025-10-28T16:39:39Z",
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        }
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      "title": "CVE-2025-62706"
    }
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}


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