#ubuntu

Ubuntu Security Notice 6663-3 - USN-6663-1 provided a security update for OpenSSL. This update provides the corresponding update for Ubuntu 24.04 LTS. As a security improvement, OpenSSL will now return deterministic random bytes instead of an error when detecting wrong padding in PKCS#1 v1.5 RSA to prevent its use in possible Bleichenbacher timing attacks.

Ubuntu Security Notice 6783-1 - It was discovered that VLC incorrectly handled certain media files. A remote attacker could possibly use this issue to cause VLC to crash, resulting in a denial of service, or potential arbitrary code execution.

NorthStar C2, prior to commit 7674a44 on March 11 2024, contains a vulnerability where the logs page is vulnerable to a stored cross site scripting issue. An unauthenticated user can simulate an agent registration to cause the cross site scripting attack and take over a users session. With this access, it is then possible to run a new payload on all of the NorthStar C2 compromised hosts (agents), and kill the original agent. Successfully tested against NorthStar C2 commit e7fdce148b6a81516e8aa5e5e037acd082611f73 running on Ubuntu 22.04. The agent was running on Windows 10 19045.

Ubuntu Security Notice 6782-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. Thomas Rinsma discovered that Thunderbird did not properly handle type check when handling fonts in PDF.js. An attacker could potentially exploit this issue to execute arbitrary javascript code in PDF.js.

Ubuntu Security Notice 6777-3 - Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

Ubuntu Security Notice 6775-2 - Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

### Summary By default, the Redis database server is not password-protected. Consequently, an attacker with access to the Redis server can gain read/write access to the data in Redis. The attacker can also modify the "mfst" (manifest) key to cause ArgoCD to execute any deployment, potentially leveraging ArgoCD's high privileges to take over the cluster. Updating the "cacheEntryHash" in the manifest JSON is necessary, but since it doesn't use a private key for signing its integrity, a simple script can generate a new FNV64a hash matching the new manifest values. The repo-server, unable to verify if its cache is compromised, will read the altered "mfst" key and initiate an update process for the injected deployment. It's also possible to edit the "app|resources-tree" key, causing the ArgoCD server to load any Kubernetes resource into the live manifest section of the app preview. This could lead to an information leak. The fact that the cache in Redis is neither signed nor validated, co...

Ubuntu Security Notice 6780-1 - Guido Vranken discovered that idna did not properly manage certain inputs, which could lead to significant resource consumption. An attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice 6781-1 - Le Dinh Hai discovered that Spreadsheet::ParseExcel was passing unvalidated input from a file into a string-type "eval". An attacker could craft a malicious file to achieve arbitrary code execution.

Ubuntu Security Notice 6779-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Jan-Ivar Bruaroey discovered that Firefox did not properly manage memory when audio input connected with multiple consumers. An attacker could potentially exploit this issue to cause a denial of service, or execute arbitrary code.