CVE-2021-31807

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    CVE-2021-31807

    Published: 8 Jun 2021Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/, http://seclists.org/fulldisclosure/2023/Oct/14, http://www.openwall.com/lists/oss-security/2023/10/11/3, https://github.com/squid-cache/squid/security/advisories/GHSA-pxwq-f3qr-w2xf, https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html, https://security.netapp.com/advisory/ntap-20210716-0007/, http://www.squid-cache.org/Versions/v4/changesets/squid-4-e7cf864f938f24eea8af0692c04d16790983c823.patch

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -648729b05673c6166c5d91c6ee4cda30cc164839

    Affected versions

    SQUID_4_14

    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
    CVE-2021-31807 | CVE-DB