UBUNTU-CVE-2017-18017

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    UBUNTU-CVE-2017-18017

    Published: 3 Jan 2018Last Modified: 26 Aug 2026
    Upstream:
    CVE-2017-18017

    Summary:

    Details: The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

    References: https://ubuntu.com/security/CVE-2017-18017, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901, http://patchwork.ozlabs.org/patch/746618/, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765, https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901, https://lkml.org/lkml/2017/4/2/13, https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.36, https://ubuntu.com/security/notices/USN-3583-1, https://ubuntu.com/security/notices/USN-3583-2, https://www.cve.org/CVERecord?id=CVE-2017-18017

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-142.191

    Affected versions

    3.11.0-12.19

    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