DEBIAN-CVE-2021-45960

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2021-45960
Published: 01 Jan 2022, 19:15
Last modified:28 Apr 2026, 20:23

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Jan 2022, 19:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:23
Last Modified
Vulnerability information updated

Description

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).

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•expat

    < 2.2.10-2+deb11u1 | < 2.4.3-1 | < 2.4.3-1 | < 2.4.3-1

  • debian•libxmltok

    all | all

References (1)