PT-2021-4599 · Libxml2+9 · Libxml2+9
Published
2021-04-21
·
Updated
2026-03-13
·
CVE-2021-3516
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
libxml2 versions prior to 2.9.11
Description
The issue is related to a use-after-free flaw in libxml2's xmllint. An attacker can exploit this by submitting a crafted file to be processed, potentially leading to unauthorized access to confidential data, disruption of data integrity, and denial of service. The flaw affects confidentiality, integrity, and availability.
Recommendations
For versions prior to 2.9.11, update to version 2.9.11 or later to resolve the issue. As a temporary workaround, consider restricting access to the xmllint component until a patch is applied. Avoid using xmllint to process untrusted or crafted files until the issue is resolved.
Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Red Hat
Rocky Linux
Suse
Ubuntu
Libxml2