by Kastro
Paper/Archive/CVE-2021-21826

CVE-2021-21826

talos — A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7.

EPSS 1%CVSS 9.8
critical.is priorityof 100
43
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 66.5.665 × 2013.3No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
AT&TAT&T Labs Xmill 0.7, Schneider Electric EcoStruxure Control Expert 15–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
talos (CNA)8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

reftalosintelligence.com/vulnerability_reports/TALOS-2021-1291