UBUNTU-CVE-2021-28662

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    UBUNTU-CVE-2021-28662

    Published: 27 May 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-28662
    Aliases:
    USN-4981-1

    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://ubuntu.com/security/CVE-2021-28662, https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h, https://ubuntu.com/security/notices/USN-4981-1, https://www.cve.org/CVERecord?id=CVE-2021-28662

    Affected packages

    Package

    Name: squid

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.10-1ubuntu1.4

    Affected versions

    4.8-1ubuntu2

    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
    UBUNTU-CVE-2021-28662 | CVE-DB