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    CVE-2017-17458

    In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script checked into the repository. Typical use of Mercurial prevents construction of such repositories, but they can be created programmatically.

    Published:Nov 3, 2017
    Last Modified:Apr 20, 2025
    EPS:Dec 7, 2017
    EPSS Score:0.17249
    CVSS Score:9.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mercurial
    Product
    Mercurial

    Exploits

    No exploit reference

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    References

    http://www.securityfocus.com/bid/102926
    https://bz.mercurial-scm.org/show_bug.cgi?id=5730
    https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
    https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html
    https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
    https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html
    https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
    https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html
    https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29
    http://www.securityfocus.com/bid/102926
    https://bz.mercurial-scm.org/show_bug.cgi?id=5730
    https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
    https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html
    https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
    https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html
    https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
    https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html
    https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29

    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