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    CVE-2020-15049

    An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.

    Published:Jun 26, 2020
    Last Modified:Nov 21, 2024
    EPS:Jun 30, 2020
    EPSS Score:0.07304
    CVSS Score:9.9

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Squid-cache
    Product
    Squid

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-273 HTTP Response Smuggling
    CAPEC-33 HTTP Request Smuggling

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
    http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
    http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch
    http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch
    https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
    https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
    https://security.netapp.com/advisory/ntap-20210312-0001/
    https://usn.ubuntu.com/4551-1/
    https://www.debian.org/security/2020/dsa-4732
    http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
    http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
    http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch
    http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch
    https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
    https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
    https://security.netapp.com/advisory/ntap-20210312-0001/
    https://usn.ubuntu.com/4551-1/
    https://www.debian.org/security/2020/dsa-4732

    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