Incorrect Calculation Affecting expat package, versions <0:2.1.0-12.amzn2.0.4
Threat Intelligence
EPSS
1.02% (85th
percentile)
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Test your applications- Snyk ID SNYK-AMZN2-EXPAT-2805159
- published 28 Apr 2022
- disclosed 1 Jan 2022
How to fix?
Upgrade Amazon-Linux:2
expat
to version 0:2.1.0-12.amzn2.0.4 or higher.
This issue was patched in ALAS2-2022-1788
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream expat
package and not the expat
package as distributed by Amazon-Linux
.
See How to fix?
for Amazon-Linux:2
relevant fixed versions and status.
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).
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45960
- http://www.openwall.com/lists/oss-security/2022/01/17/3
- https://bugzilla.mozilla.org/show_bug.cgi?id=1217609
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://github.com/libexpat/libexpat/issues/531
- https://github.com/libexpat/libexpat/pull/534
- https://security.gentoo.org/glsa/202209-24
- https://security.netapp.com/advisory/ntap-20220121-0004/
- https://www.debian.org/security/2022/dsa-5073
- https://www.tenable.com/security/tns-2022-05
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