CLSA-2021-1640700710

    Dashboard / Vulnerabilities / CLSA-2021-1640700710

    CLSA-2021-1640700710

    Published: 28 Dec 2021Last Modified: 4 Jun 2026

    Summary: Fix CVE(s): CVE-2021-3517, CVE-2021-3516, CVE-2020-24977, CVE-2021-3541, CVE-2021-3537, CVE-2021-3518, CVE-2019-20388, CVE-2017-8872

    Details: * SECURITY UPDATE: Out-of-bounds array access - debian/patches/CVE-2021-3517.patch: Validate UTF8 in xmlEncodeEntities - CVE-2021-3517 * SECURITY UPDATE: Use-after-free error - debian/patches/CVE-2021-3518.patch: Fix use-after-free with 'xmllint --xinclude --dropdtd' - CVE-2021-3518 * SECURITY UPDATE: Null pointer dereference while parsing in recovery mode - debian/patches/CVE-2021-3537.patch: Propagate error in xmlParseElementChildrenContentDeclPriv - CVE-2021-3537 * SECURITY UPDATE: Parser fix for the billion laugs attach - debian/patches/CVE-2021-3541.patch: Fix parameter entities expansion in xmlParserEntityCheck - CVE-2021-3541 * SECURITY UPDATE: Miscalculation of available bytes when parsing - debian/patches/CVE-2017-8872.patch: Free input buffer in xmlHaltParser - CVE-2017-8872 * SECURITY UPDATE: Memory leak - debian/patches/CVE-2019-20388.patch: Fix memory leak in xmlSchemaValidateStream - CVE-2019-20388 * SECURITY UPDATE: Out-of-bounds array access - debian/patches/CVE-2020-24977.patch: Fix out-of-bounds read with 'xmllint --htmlout' - CVE-2020-24977 * SECURITY UPDATE: Use-after-free error - debian/patches/CVE-2021-3516.patch: Fix use-after-free with 'xmllint --html --push' - CVE-2021-3516

    References: https://errata.cloudlinux.com/ubuntu16_04/CLSA-2021-1640700710

    Affected packages

    Package

    Name: libxml2

    Purl: pkg:deb/tuxcare/libxml2?distro=ubuntu-16.04

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.9.3+dfsg1-1ubuntu0.7+tuxcare.els1

    Affected versions

    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
    CLSA-2021-1640700710 | CVE-DB