UBUNTU-CVE-2022-23476

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    UBUNTU-CVE-2022-23476

    Published: 8 Dec 2022Last Modified: 18 Jul 2025
    Upstream:
    CVE-2022-23476

    Summary:

    Details: Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. Users are advised to upgrade to Nokogiri `>= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.

    References: https://ubuntu.com/security/CVE-2022-23476, https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50, https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce, https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj, https://www.cve.org/CVERecord?id=CVE-2022-23476

    Affected packages

    Package

    Name: ruby-nokogiri

    Purl: pkg:deb/ubuntu/[email protected]+ds-1ubuntu0.1~esm1?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.5.9-2
    1.5.9-3

    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
    UBUNTU-CVE-2022-23476 | CVE-DB