CVE-2021-28662

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    CVE-2021-28662

    Published: 27 May 2021Last Modified: 9 Jul 2026

    Summary:

    Details: An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.

    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://www.debian.org/security/2021/dsa-4924, http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch, https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e, https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 1243ec712bf76c549ba7f48fcdc30d98ce550449
    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-2021-28662 | CVE-DB