#ubuntu

Ubuntu Security Notice 6174-1 - Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did not properly implement speculative execution barriers in usercopy functions in certain situations. A local attacker could use this to expose sensitive information. It was discovered that the Human Interface Device support driver in the Linux kernel contained a type confusion vulnerability in some situations. A local attacker could use this to cause a denial of service.

A broken authentication vulnerability in 4D SAS 4D Server software v17, v18, v19 R7, and earlier allows attackers to send crafted TCP packets containing requests to perform arbitrary actions.

Ubuntu Security Notice 6156-2 - USN-6156-1 fixed a vulnerability in SSSD. In certain environments, not all packages ended up being upgraded at the same time, resulting in authentication failures when the PAM module was being used. This update fixes the problem. It was discovered that SSSD incorrectly sanitized certificate data used in LDAP filters. When using this issue in combination with FreeIPA, a remote attacker could possibly use this issue to escalate privileges.

Ubuntu Security Notice 6169-1 - It was discovered that GNU SASL's GSSAPI server could make an out-of-bounds reads if given specially crafted GSS-API authentication data. A remote attacker could possibly use this issue to cause a denial of service or to expose sensitive information.

Ubuntu Security Notice 6168-1 - Gregory James Duck discovered that libx11 incorrectly handled certain Request, Event, or Error IDs. If a user were tricked into connecting to a malicious X Server, a remote attacker could possibly use this issue to cause libx11 to crash, resulting in a denial of service.

Ubuntu Security Notice 6155-2 - USN-6155-1 fixed a vulnerability in Requests. This update provides the corresponding update for Ubuntu 16.04 ESM and 18.04 ESM. Dennis Brinkrolf and Tobias Funke discovered that Requests incorrectly leaked Proxy-Authorization headers. A remote attacker could possibly use this issue to obtain sensitive information.

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to version 1.13.4, when Gateway API is enabled in Cilium, the absence of a check on the namespace in which a ReferenceGrant is created could result in Cilium unintentionally gaining visibility of secrets (including certificates) and services across namespaces. An attacker on an affected cluster can leverage this issue to use cluster secrets that should not be visible to them, or communicate with services that they should not have access to. Gateway API functionality is disabled by default. This vulnerability is fixed in Cilium release 1.13.4. As a workaround, restrict the creation of `ReferenceGrant` resources to admin users by using Kubernetes RBAC.

phpFK version 8.0 suffers from a cross site scripting vulnerability.

PyLoad version 0.5.0 suffers from an unauthenticated remote code execution vulnerability.

libtiff 4.5.0 is vulnerable to Buffer Overflow via extractContigSamplesBytes() at /libtiff/tools/tiffcrop.c:3215.