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    CVE-2021-45960

    In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

    Published:Jan 1, 2022
    Last Modified:May 5, 2025
    EPS:Jan 1, 2022
    EPSS Score:0.00374
    CVSS Score:8.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Libexpat Project
    Product
    Libexpat
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    Hci Baseboard Management Controller
    Vendor
    Netapp
    Product
    Oncommand Workflow Automation
    Vendor
    Netapp
    Product
    Solidfire \& Hci Management Node
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Core Services
    Vendor
    Siemens
    Product
    Sinema Remote Connect Server
    Vendor
    Tenable
    Product
    Nessus

    Exploits

    http://www.openwall.com/lists/oss-security/2022/01/17/3https://github.com/libexpat/libexpat/issues/531http://www.openwall.com/lists/oss-security/2022/01/17/3https://github.com/libexpat/libexpat/issues/531https://github.com/nanopathi/external_expat_AOSP10_r33_CVE-2021-45960https://github.com/Trinadh465/external_lib_AOSP10_r33_CVE-2021-45960_CVE-2021-46143-

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    References

    http://www.openwall.com/lists/oss-security/2022/01/17/3
    https://bugzilla.mozilla.org/show_bug.cgi?id=1217609
    https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
    https://github.com/libexpat/libexpat/issues/531
    https://github.com/libexpat/libexpat/pull/534
    https://security.gentoo.org/glsa/202209-24
    https://security.netapp.com/advisory/ntap-20220121-0004/
    https://www.debian.org/security/2022/dsa-5073
    https://www.tenable.com/security/tns-2022-05
    http://www.openwall.com/lists/oss-security/2022/01/17/3
    https://bugzilla.mozilla.org/show_bug.cgi?id=1217609
    https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
    https://github.com/libexpat/libexpat/issues/531
    https://github.com/libexpat/libexpat/pull/534
    https://security.gentoo.org/glsa/202209-24
    https://security.netapp.com/advisory/ntap-20220121-0004/
    https://www.debian.org/security/2022/dsa-5073
    https://www.tenable.com/security/tns-2022-05

    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
    CVE-2021-45960 — Debian, Libexpat_Project + (High 8.8) | CVE-DB