CVE-2021-3516
libxml2 - security update
7.8
HIGH
CVSS 3.1
EPSS 0.38%
Description
There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.
How to fix CVE-2021-3516
To remediate CVE-2021-3516, upgrade the affected package to a fixed version below.
- Debian/libxml2—upgrade to 2.9.10+dfsg-6.6 or later
- —upgrade to 2.9.4+dfsg1-2.2+deb9u4 or later
Is CVE-2021-3516 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.9.10+dfsg-6.6
- from 0, < 2.9.4+dfsg1-2.2+deb9u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |