#ubuntu

It was discovered that a race condition existed in the memory address space accounting implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Sonke Huster discovered that a use-after-free vulnerability existed in the WiFi driver stack in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Multiple versions of Korenix JetWave suffer from authenticated command injection and denial of service vulnerabilities.

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.

Ubuntu Security Notice 5871-1 - It was discovered that Git incorrectly handled certain repositories. An attacker could use this issue to make Git uses its local clone optimization even when using a non-local transport. Joern Schneeweisz discovered that Git incorrectly handled certain commands. An attacker could possibly use this issue to overwrite a patch outside the working tree.

Ubuntu Security Notice 5869-1 - Bahruz Jabiyev, Anthony Gavazzi, Engin Kirda, Kaan Onarlioglu, Adi Peleg, and Harvey Tuch discovered that HAProxy incorrectly handled empty header names. A remote attacker could possibly use this issue to manipulate headers and bypass certain authentication checks and restrictions.

Microsoft on Tuesday released security updates to address 75 flaws spanning its product portfolio, three of which have come under active exploitation in the wild. The updates are in addition to 22 flaws the Windows maker patched in its Chromium-based Edge browser over the past month. Of the 75 vulnerabilities, nine are rated Critical and 66 are rated Important in severity. 37 out of 75 bugs are

HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.

An Untrusted Pointer Dereference was discovered in function mrb_vm_exec in mruby before 3.1.0-rc. The vulnerability causes a segmentation fault and application crash.

Ubuntu Security Notice 5868-1 - Jakob Ackermann discovered that Django incorrectly handled certain file uploads. A remote attacker could possibly use this issue to cause Django to consume resources, leading to a denial of service.

Ubuntu Security Notice 5864-1 - Frederic Cambus discovered that Fig2dev incorrectly handled certain image files. If a user or an automated system were tricked into opening a certain specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. It was discovered that Fig2dev incorrectly handled certain image files. If a user or an automated system were tricked into opening a certain specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service.