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    CVE-2022-25235

    xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

    Published:Feb 16, 2022
    Last Modified:May 5, 2025
    EPS:Feb 16, 2022
    EPSS Score:0.13322
    CVSS Score:9.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Libexpat Project
    Product
    Libexpat
    Vendor
    Oracle
    Product
    Http Server
    Vendor
    Oracle
    Product
    Zfs Storage Appliance Kit
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Core Services
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor
    Vendor
    Siemens
    Product
    Sinema Remote Connect Server

    Exploits

    https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-25235

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    References

    http://www.openwall.com/lists/oss-security/2022/02/19/1
    https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
    https://github.com/libexpat/libexpat/pull/562
    https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/
    https://security.gentoo.org/glsa/202209-24
    https://security.netapp.com/advisory/ntap-20220303-0008/
    https://www.debian.org/security/2022/dsa-5085
    https://www.oracle.com/security-alerts/cpuapr2022.html
    http://www.openwall.com/lists/oss-security/2022/02/19/1
    https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
    https://github.com/libexpat/libexpat/pull/562
    https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/
    https://security.gentoo.org/glsa/202209-24
    https://security.netapp.com/advisory/ntap-20220303-0008/
    https://www.debian.org/security/2022/dsa-5085
    https://www.oracle.com/security-alerts/cpuapr2022.html

    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