CVE-2021-21826

Published at:
2021-08-20T22:15:07.067

Global infos:

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.

CVE Status: Modified

References:

  • [email protected]
  • af854a3a-2127-422b-91ae-364da2661108
  • Metrics:

    AttributeValue
    Attack ComplexityLOW
    Attack VectorNETWORK
    Availability ImpactHIGH
    Base Score9.8
    Base SeverityCRITICAL
    Confidentiality ImpactHIGH
    Integrity ImpactHIGH
    Privileges RequiredNONE
    ScopeUNCHANGED
    User InteractionNONE
    Vector StringCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Exploitability Score3.9
    Impact Score5.9
    Source[email protected]
    TypePrimary

    Links:

    Exploit-db
    Github