CVE-2021-3537
Published: 14 May 2021
A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.
Priority
Status
Package | Release | Status |
---|---|---|
libxml2 Launchpad, Ubuntu, Debian |
hirsute |
Released
(2.9.10+dfsg-6.3ubuntu0.1)
|
jammy |
Not vulnerable
(2.9.10+dfsg-6.7)
|
|
trusty |
Released
(2.9.1+dfsg1-3ubuntu4.13+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
xenial |
Released
(2.9.3+dfsg1-1ubuntu0.7+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
impish |
Not vulnerable
(2.9.10+dfsg-6.7)
|
|
bionic |
Released
(2.9.4+dfsg1-6.1ubuntu1.4)
|
|
focal |
Released
(2.9.10+dfsg-5ubuntu0.20.04.1)
|
|
groovy |
Released
(2.9.10+dfsg-5ubuntu0.20.10.2)
|
|
upstream |
Released
(2.9.10+dfsg-6.6, 2.9.11)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.9 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3537
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/243
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/244
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/245
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/babe75030c7f64a37826bb3342317134568bef61
- https://ubuntu.com/security/notices/USN-4991-1
- NVD
- Launchpad
- Debian