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    CVE-2021-21826

    A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. Within `DecodeTreeBlock` which is called during the decompression of an XMI file, a UINT32 is loaded from the file and used as trusted input as the length of a buffer. An attacker can provide a malicious file to trigger this vulnerability.

    Published:Aug 20, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 20, 2021
    EPSS Score:0.00459
    CVSS Score:9.8

    Affected Products

    Vendor
    Att
    Product
    Xmill

    Exploits

    https://talosintelligence.com/vulnerability_reports/TALOS-2021-1291https://talosintelligence.com/vulnerability_reports/TALOS-2021-1291

    Related CVEs

    CVE-2022-26507 (CVSS 9.8) — A heap-based buffer overflow exists in XML Decompression DecodeTreeBlock in AT&T Labs Xmill 0.7. A crafted inp…
    CVE-2021-21811 (CVSS 9.8) — A memory corruption vulnerability exists in the XML-parsing CreateLabelOrAttrib functionality of AT&T Labs’ Xm…
    CVE-2021-21828 (CVSS 9.8) — A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT…
    CVE-2021-21827 (CVSS 9.8) — A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT…
    CVE-2021-21825 (CVSS 9.8) — A heap-based buffer overflow vulnerability exists in the XML Decompression PlainTextUncompressor::UncompressIt…
    CVE-2021-21810 (CVSS 9.8) — A memory corruption vulnerability exists in the XML-parsing ParseAttribs functionality of AT&T Labs’ Xmill 0.7…
    CVE-2021-21815 (CVSS 7.8) — A stack-based buffer overflow vulnerability exists in the command-line-parsing HandleFileArg functionality of …
    CVE-2021-21813 (CVSS 7.8) — Within the function HandleFileArg the argument filepattern is under control of the user who passes it in from …
    CVE-2021-21814 (CVSS 7.8) — Within the function HandleFileArg the argument filepattern is under control of the user who passes it in from …
    CVE-2021-21812 (CVSS 7.8) — A stack-based buffer overflow vulnerability exists in the command-line-parsing HandleFileArg functionality of …

    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