CVE-2018-15501

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    CVE-2018-15501

    Published: 18 Aug 2018Last Modified: 8 Jul 2026

    Summary:

    Details: In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a remote attacker can send a crafted smart-protocol "ng" packet that lacks a '\0' byte to trigger an out-of-bounds read that leads to DoS.

    References: https://github.com/libgit2/libgit2/releases/tag/v0.26.6, https://github.com/libgit2/libgit2/releases/tag/v0.27.4, https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html, https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html, https://www.pro-linux.de/sicherheit/2/44650/denial-of-service-in-libgit2.html, https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9406, https://bugzilla.suse.com/show_bug.cgi?id=1104641, https://github.com/libgit2/libgit2/commit/1f9a8510e1d2f20ed7334eeeddb92c4dd8e7c649

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e98d0a37c93574d2c6107bf7f31140b548c6a7bf

    Affected versions

    v0.26.5
    v0.26.4
    v0.26.3
    v0.26.2
    v0.26.1
    v0.26.0-rc2
    v0.26.0
    v0.26.0-rc1

    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