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Status published
Unknown
CVE-2021-45960
In Expat (aka libexpat) before 2.4.3, a left shift by...
Vulnerability 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).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/libexpat/libexpat/issues/531
- https://github.com/libexpat/libexpat/pull/534
- https://bugzilla.mozilla.org/show_bug.cgi?id=1217609
- http://www.openwall.com/lists/oss-security/2022/01/17/3
- https://security.netapp.com/advisory/ntap-20220121-0004/
- https://www.tenable.com/security/tns-2022-05
- https://www.debian.org/security/2022/dsa-5073
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://security.gentoo.org/glsa/202209-24
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Affected Vendor
libexpat project
View all reports →Affected Software
libexpat, nessus, debian linux, sinema remote connect server, active iq unified manager, hci baseboard management controller, oncommand workflow automation, solidfire \& hci management node
Vulnerable Versions:
0, 10.0.0, 10.0, 11.0, h610c, h610s, h615c
Timeline
Official Publish:
January 1st, 2022
Last Modified:
May 5th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.