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)
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "libx11-6-udeb": "2:1.6.2-1ubuntu2.1+esm5", "libx11-6-dbg": "2:1.6.2-1ubuntu2.1+esm5", "libx11-xcb1-dbg": "2:1.6.2-1ubuntu2.1+esm5", "libx11-xcb-dev": "2:1.6.2-1ubuntu2.1+esm5", "libx11-xcb1": "2:1.6.2-1ubuntu2.1+esm5", "libx11-doc": "2:1.6.2-1ubuntu2.1+esm5", "libx11-6-udeb-dbgsym": "2:1.6.2-1ubuntu2.1+esm5", "libx11-xcb-dev-dbgsym": "2:1.6.2-1ubuntu2.1+esm5", "libx11-6-dbgsym": "2:1.6.2-1ubuntu2.1+esm5", "libx11-dev": "2:1.6.2-1ubuntu2.1+esm5", "libx11-xcb1-dbgsym": "2:1.6.2-1ubuntu2.1+esm5", "libx11-dev-dbgsym": "2:1.6.2-1ubuntu2.1+esm5", "libx11-6": "2:1.6.2-1ubuntu2.1+esm5", "libx11-data": "2:1.6.2-1ubuntu2.1+esm5" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "libx11-6-udeb": "2:1.6.3-1ubuntu2.2+esm4", "libx11-6-dbg": "2:1.6.3-1ubuntu2.2+esm4", "libx11-xcb1-dbg": "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", "libx11-6-udeb-dbgsym": "2:1.6.3-1ubuntu2.2+esm4", "libx11-xcb-dev-dbgsym": "2:1.6.3-1ubuntu2.2+esm4", "libx11-6-dbgsym": "2:1.6.3-1ubuntu2.2+esm4", "libx11-dev": "2:1.6.3-1ubuntu2.2+esm4", "libx11-xcb1-dbgsym": "2:1.6.3-1ubuntu2.2+esm4", "libx11-dev-dbgsym": "2:1.6.3-1ubuntu2.2+esm4", "libx11-6": "2:1.6.3-1ubuntu2.2+esm4", "libx11-data": "2:1.6.3-1ubuntu2.2+esm4" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "libx11-6-udeb": "2:1.6.4-3ubuntu0.4+esm2", "libx11-6-dbgsym": "2:1.6.4-3ubuntu0.4+esm2", "libx11-dev": "2:1.6.4-3ubuntu0.4+esm2", "libx11-xcb1-dbgsym": "2:1.6.4-3ubuntu0.4+esm2", "libx11-6": "2:1.6.4-3ubuntu0.4+esm2", "libx11-xcb-dev": "2:1.6.4-3ubuntu0.4+esm2", "libx11-xcb1": "2:1.6.4-3ubuntu0.4+esm2", "libx11-doc": "2:1.6.4-3ubuntu0.4+esm2", "libx11-data": "2:1.6.4-3ubuntu0.4+esm2" } ] }