USN-6407-2: libx11 vulnerabilities
Severity
Medium
Vendor
VMware Tanzu
Versions Affected
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
USN-6407-1 fixed several vulnerabilities in libx11. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original advisory details: Gregory James Duck discovered that libx11 incorrectly handled certain keyboard symbols. If a user were tricked into connecting to a malicious X server, a remote attacker could use this issue to cause libx11 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-43785) Yair Mizrahi discovered that libx11 incorrectly handled certain malformed XPM image files. If a user were tricked into opening a specially crafted XPM image file, a remote attacker could possibly use this issue to consume memory, leading to a denial of service. (CVE-2023-43786) Yair Mizrahi discovered that libx11 incorrectly handled certain malformed XPM image files. If a user were tricked into opening a specially crafted XPM image file, a remote attacker could use this issue to cause libx11 to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2023-43787) Update Instructions: Run `sudo pro fix USN-6407-2` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libx11-6 - 2:1.6.3-1ubuntu2.2+esm4 libx11-data - 2:1.6.3-1ubuntu2.2+esm4 libx11-xcb-dev - 2:1.6.3-1ubuntu2.2+esm4 libx11-xcb1 - 2:1.6.3-1ubuntu2.2+esm4 libx11-doc - 2:1.6.3-1ubuntu2.2+esm4 libx11-dev - 2:1.6.3-1ubuntu2.2+esm4 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
CVEs contained in this USN include: CVE-2023-43785, CVE-2023-43786, CVE-2023-43787
Affected VMware Products and Versions
Severity is medium unless otherwise noted.
-
Platform Automation Toolkit
- 4.0.x versions prior to 4.0.13
- 4.1.x versions prior to 4.1.13
- 4.2.x versions prior to 4.2.8
- 4.3.x versions prior to 4.3.5
-
Isolation Segment
- 2.11.x versions prior to 2.11.41
- 2.13.x versions prior to 2.13.26
- 3.0.x versions prior to 3.0.19
- 4.0.x versions prior to 4.0.11+LTS-T
-
Operations Manager
- 2.7.x versions prior to 2.7.25
- 2.8.x versions prior to 2.8.16
- 2.9.x versions prior to 2.9.12
- 2.10.x versions prior to 2.10.3
-
VMware Tanzu Application Service for VMs
- 2.11.x versions prior to 2.11.47
- 2.13.x versions prior to 2.13.29
- 3.0.x versions prior to 3.0.19
- 4.0.x versions prior to 4.0.11+LTS-T
Mitigation
Users of affected products are strongly encouraged to follow the mitigation below. On the Tanzu Network product page for each release, check the Depends On section and/or Release Notes for this information. Releases that have fixed this issue include:
-
Platform Automation Toolkit
- 4.0.13
- 4.1.13
- 4.2.8
- 4.3.5
-
Isolation Segment
- 2.11.41
- 2.13.26
- 3.0.19
- 4.0.11+LTS-T
-
Operations Manager
- 2.7.25
- 2.8.16
- 2.9.12
- 2.10.3
-
VMware Tanzu Application Service for VMs
- 2.11.47
- 2.13.29
- 3.0.19
- 4.0.11+LTS-T
References
- https://ubuntu.com/security/CVE-2023-43785
- https://ubuntu.com/security/CVE-2023-43786
- https://ubuntu.com/security/CVE-2023-43787
- https://ubuntu.com/security/notices/USN-6407-2
- https://cloudfoundry.org/blog/usn-6407-2
History
2023-12-04: Initial vulnerability report published.