#ubuntu

Microsoft has rolled out Patch Tuesday updates for May 2023 to address 38 security flaws, including one zero-day bug that it said is being actively exploited in the wild. Trend Micro's Zero Day Initiative (ZDI) said the volume is the lowest since August 2021, although it pointed out that "this number is expected to rise in the coming months." Of the 38 vulnerabilities, six are rated Critical and

Buffer Overflow vulnerability found in Libming swftophp v.0.4.8 allows a local attacker to cause a denial of service via the newVar_N in util/decompile.c.

Buffer Overflow vulnerability found in Libming swftophp v.0.4.8 allows a local attacker to cause a denial of service via the cws2fws function in util/decompile.c.

Ubuntu Security Notice 6062-1 - It was discovered that FreeType incorrectly handled certain malformed font files. If a user were tricked into using a specially crafted font file, a remote attacker could cause FreeType to crash, or possibly execute arbitrary code.

Catdoc v0.95 was discovered to contain a global buffer overflow via the function process_file at /src/reader.c.

yasm v1.3.0 was discovered to contain a memory leak via the function yasm_intnum_copy at /libyasm/intnum.c.

Ubuntu Security Notice 6061-1 - Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Ubuntu Security Notice 6060-1 - Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues. MySQL has been updated to 8.0.33 in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04. Ubuntu 18.04 LTS has been updated to MySQL 5.7.42. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Ubuntu Security Notice 6059-1 - It was discovered that Erlang did not properly implement TLS client certificate validation during the TLS handshake. A remote attacker could use this issue to bypass client authentication.

Ubuntu Security Notice 6055-2 - USN-6055-1 fixed a vulnerability in Ruby. Unfortunately it introduced a regression. This update reverts the patches applied to CVE-2023-28755 in order to fix the regression pending further investigation. It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service.