#ubuntu

Ubuntu Security Notice 5548-1 - It was discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to execute arbitrary code.

Ubuntu Security Notice 5551-1 - It was discovered that mod-wsgi did not correctly remove the X-Client-IP header when processing requests from untrusted proxies. A remote attacker could use this issue to pass the header to WSGI applications, contrary to expectations.

Ubuntu Security Notice 5550-1 - It was discovered that GnuTLS incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. It was discovered that GnuTLS incorrectly handled the verification of certain pkcs7 signatures. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code.

Ubuntu Security Notice 5549-1 - It was discovered that Django incorrectly handled certain FileResponse. An attacker could possibly use this issue to expose sensitive information or gain access over user machine.

Ubuntu Security Notice 5546-1 - Neil Madden discovered that OpenJDK did not properly verify ECDSA signatures. A remote attacker could possibly use this issue to insert, edit or obtain sensitive information. This issue only affected OpenJDK 17 and OpenJDK 18. It was discovered that OpenJDK incorrectly limited memory when compiling a specially crafted XPath expression. An attacker could possibly use this issue to cause a denial of service. This issue was fixed in OpenJDK 8 and OpenJDK 18. USN-5388-1 and USN-5388-2 addressed this issue in OpenJDK 11 and OpenJDK 17.

Ubuntu Security Notice 5546-2 - USN-5546-1 fixed vulnerabilities in OpenJDK. This update provides the corresponding updates for Ubuntu 16.04 ESM. Neil Madden discovered that OpenJDK did not properly verify ECDSA signatures. A remote attacker could possibly use this issue to insert, edit or obtain sensitive information. This issue only affected OpenJDK 17 and OpenJDK 18.

Ubuntu Security Notice 5547-1 - Le Wu discovered that the NVIDIA graphics drivers did not properly perform input validation in some situations. A local user could use this to cause a denial of service or possibly execute arbitrary code. Tal Lossos discovered that the NVIDIA graphics drivers incorrectly handled certain memory operations, leading to a null-pointer dereference. A local attacker could use this to cause a denial of service. Artem S. Tashkinov discovered that the NVIDIA graphics drivers Dynamic Boost D-Bus component did not properly restrict access to its endpoint. When enabled in non-default configurations, a local attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 5545-1 - Arthur Mongodin discovered that the netfilter subsystem in the Linux kernel did not properly perform data validation. A local attacker could use this to escalate privileges in certain situations.

Ubuntu Security Notice 5463-2 - USN-5463-1 fixed vulnerabilities in NTFS-3G. This update provides the corresponding updates for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Roman Fiedler discovered that NTFS-3G incorrectly handled certain return codes. A local attacker could possibly use this issue to intercept protocol traffic between FUSE and the kernel.

Ubuntu Security Notice 5544-1 - It was discovered that the Atheros ath9k wireless device driver in the Linux kernel did not properly handle some error conditions, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Felix Fu discovered that the Sun RPC implementation in the Linux kernel did not properly handle socket states, leading to a use-after-free vulnerability. A remote attacker could possibly use this to cause a denial of service or execute arbitrary code.