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    CVE-2022-2663

    An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

    Published:Aug 30, 2022
    Last Modified:Nov 21, 2024
    EPS:Sep 1, 2022
    EPSS Score:0.00219
    CVSS Score:5.3

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663https://www.youtube.com/watch?v=WIq-YgQuYCAhttps://dgl.cx/2022/08/nat-again-irc-cve-2022-2663https://www.youtube.com/watch?v=WIq-YgQuYCA

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    References

    https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
    https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
    https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
    https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
    https://www.debian.org/security/2022/dsa-5257
    https://www.openwall.com/lists/oss-security/2022/08/30/1
    https://www.youtube.com/watch?v=WIq-YgQuYCA
    https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
    https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
    https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
    https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
    https://www.debian.org/security/2022/dsa-5257
    https://www.openwall.com/lists/oss-security/2022/08/30/1
    https://www.youtube.com/watch?v=WIq-YgQuYCA

    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