CVE-2021-45960

high

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).

References

https://www.tenable.com/security/tns-2022-05

https://www.debian.org/security/2022/dsa-5073

https://security.netapp.com/advisory/ntap-20220121-0004/

https://security.gentoo.org/glsa/202209-24

https://github.com/libexpat/libexpat/pull/534

https://github.com/libexpat/libexpat/issues/531

https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf

https://bugzilla.mozilla.org/show_bug.cgi?id=1217609

http://www.openwall.com/lists/oss-security/2022/01/17/3

Details

Source: Mitre, NVD

Published: 2022-01-01

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H