CVE-2017-18258

    Dashboard / Vulnerabilities / CVE-2017-18258

    CVE-2017-18258

    Published: 8 Apr 2018Last Modified: 7 Aug 2026

    Summary:

    Details: The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

    References: https://kc.mcafee.com/corporate/index?page=content&id=SB10284, https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html, https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html, https://usn.ubuntu.com/3739-1/, https://security.netapp.com/advisory/ntap-20190719-0001/, https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4b4d3d85165e6bfca23893cf98834c4bc747a96c

    Affected versions

    v2.9.6-rc1
    v2.9.5
    v2.9.5-rc2
    v2.9.5-rc1
    v2.9.4
    v2.9.4-rc2
    v2.9.4-rc1
    v2.9.3
    v2.9.2
    v2.9.2-rc2
    v2.9.2-rc1
    v2.9.1
    v2.9.0
    v2.9.0-rc2

    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