UBUNTU-CVE-2018-15501

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    UBUNTU-CVE-2018-15501

    Published: 18 Aug 2018Last Modified: 13 Aug 2026
    Upstream:
    CVE-2018-15501
    Aliases:
    USN-8628-1

    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://ubuntu.com/security/CVE-2018-15501, https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9406, https://github.com/libgit2/libgit2/commit/1f9a8510e1d2f20ed7334eeeddb92c4dd8e7c649, https://bugzilla.suse.com/show_bug.cgi?id=1104641, https://github.com/libgit2/libgit2/releases/tag/v0.26.6, https://github.com/libgit2/libgit2/releases/tag/v0.27.4, https://www.pro-linux.de/sicherheit/2/44650/denial-of-service-in-libgit2.html, https://www.cve.org/CVERecord?id=CVE-2018-15501, https://ubuntu.com/security/notices/USN-8628-1

    Affected packages

    Package

    Name: libgit2

    Purl: pkg:deb/ubuntu/libgit2?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.19.0-2ubuntu0.4+esm2

    Affected versions

    0.19.0-2
    0.19.0-2ubuntu0.4
    0.19.0-2ubuntu0.4+esm1

    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