CVE-2020-25097

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    CVE-2020-25097

    Published: 19 Mar 2021Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/, https://security.gentoo.org/glsa/202105-14, https://security.netapp.com/advisory/ntap-20210727-0010/, https://www.debian.org/security/2021/dsa-4873, http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch, http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch, https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fa47a3bc4d382e28e7235d08750401b910e4b13a

    Affected versions

    SQUID_4_13

    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-2020-25097 | CVE-DB