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    CVE-2023-29197

    guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Affected versions are subject to improper header parsing. An attacker could sneak in a newline (\n) into both the header names and values. While the specification states that \r\n\r\n is used to terminate the header list, many servers in the wild will also accept \n\n. This is a follow-up to CVE-2022-24775 where the fix was incomplete. The issue has been patched in versions 1.9.1 and 2.4.5. There are no known workarounds for this vulnerability. Users are advised to upgrade.

    Published:Apr 17, 2023
    Last Modified:Feb 13, 2025
    EPS:Apr 17, 2023
    EPSS Score:0.02291
    CVSS Score:5.3

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Guzzlephp
    Product
    Psr-7

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-436 Interpretation Conflict

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    References

    https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775
    https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96
    https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvw
    https://lists.debian.org/debian-lts-announce/2023/12/msg00028.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/FJANWDXJZE5BGLN4MQ4FEHV5LJ6CMKQF/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/O35UN4IK6VS2LXSRWUDFWY7NI73RKY2U/
    https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775
    https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96
    https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvw
    https://lists.debian.org/debian-lts-announce/2023/12/msg00028.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/FJANWDXJZE5BGLN4MQ4FEHV5LJ6CMKQF/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/O35UN4IK6VS2LXSRWUDFWY7NI73RKY2U/
    https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High