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    CVE-2023-46847

    Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.

    Published:Oct 19, 2023
    Last Modified:Feb 25, 2026
    EPS:Nov 3, 2023
    EPSS Score:0.44737
    CVSS Score:8.6

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Arm 64
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Squid-cache
    Product
    Squid

    Exploits

    No exploit reference

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    References

    https://access.redhat.com/errata/RHSA-2023:6266
    https://access.redhat.com/errata/RHSA-2023:6267
    https://access.redhat.com/errata/RHSA-2023:6268
    https://access.redhat.com/errata/RHSA-2023:6748
    https://access.redhat.com/errata/RHSA-2023:6801
    https://access.redhat.com/errata/RHSA-2023:6803
    https://access.redhat.com/errata/RHSA-2023:6804
    https://access.redhat.com/errata/RHSA-2023:6805
    https://access.redhat.com/errata/RHSA-2023:6810
    https://access.redhat.com/errata/RHSA-2023:6882
    https://access.redhat.com/errata/RHSA-2023:6884
    https://access.redhat.com/errata/RHSA-2023:7213
    https://access.redhat.com/errata/RHSA-2023:7576
    https://access.redhat.com/errata/RHSA-2023:7578
    https://access.redhat.com/security/cve/CVE-2023-46847
    https://bugzilla.redhat.com/show_bug.cgi?id=2245916
    https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4g
    https://access.redhat.com/errata/RHSA-2023:6266
    https://access.redhat.com/errata/RHSA-2023:6267
    https://access.redhat.com/errata/RHSA-2023:6268
    https://access.redhat.com/errata/RHSA-2023:6748
    https://access.redhat.com/errata/RHSA-2023:6801
    https://access.redhat.com/errata/RHSA-2023:6803
    https://access.redhat.com/errata/RHSA-2023:6804
    https://access.redhat.com/errata/RHSA-2023:6805
    https://access.redhat.com/errata/RHSA-2023:6810
    https://access.redhat.com/errata/RHSA-2023:6882
    https://access.redhat.com/errata/RHSA-2023:6884
    https://access.redhat.com/errata/RHSA-2023:7213
    https://access.redhat.com/errata/RHSA-2023:7576
    https://access.redhat.com/errata/RHSA-2023:7578
    https://access.redhat.com/security/cve/CVE-2023-46847
    https://bugzilla.redhat.com/show_bug.cgi?id=2245916
    https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4g
    https://lists.debian.org/debian-lts-announce/2024/01/msg00003.html
    https://security.netapp.com/advisory/ntap-20231130-0002/

    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