CVE-2021-45960
- State
- Published
- Severity
- 8.8 High
- Published
- Jan 1, 2022
- Updated
- Oct 14, 2026
- Reserved
- Jan 1, 2022
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).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-682 Incorrect Calculation
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://github.com/libexpat/libexpat/issues/531
- https://github.com/libexpat/libexpat/pull/534
- https://bugzilla.mozilla.org/show_bug.cgi?id=1217609
- [oss-security] 20220117 Expat 2.4.3 released, includes 8 security fixesmailing-list
- https://security.netapp.com/advisory/ntap-20220121-0004/
- https://www.tenable.com/security/tns-2022-05
- DSA-5073vendor-advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- GLSA-202209-24vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-484086.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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