#ubuntu

Ubuntu Security Notice 6129-1 - It was discovered that Avahi incorrectly handled certain DBus messages. A local attacker could possibly use this issue to cause Avahi to crash, resulting in a denial of service.

Ubuntu Security Notice 6128-2 - USN-6128-1 fixed a vulnerability in CUPS. This update provides the corresponding update for Ubuntu 16.04 ESM. It was discovered that CUPS incorrectly handled logging. A remote attacker could use this issue to cause CUPS to crash, resulting in a denial of service, or possibly execute arbitrary code.

OpenPrinting CUPS is an open source printing system. In versions 2.4.2 and prior, a heap buffer overflow vulnerability would allow a remote attacker to launch a denial of service (DoS) attack. A buffer overflow vulnerability in the function `format_log_line` could allow remote attackers to cause a DoS on the affected system. Exploitation of the vulnerability can be triggered when the configuration file `cupsd.conf` sets the value of `loglevel `to `DEBUG`. No known patches or workarounds exist at time of publication.

Ubuntu Security Notice 6128-1 - It was discovered that CUPS incorrectly handled logging. A remote attacker could use this issue to cause CUPS to crash, resulting in a denial of service, or possibly execute arbitrary code.

Ubuntu Security Notice 6127-1 - Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Gwangun Jung discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

mp4v2 v2.1.3 was discovered to contain a memory leak via MP4File::ReadString() at mp4file_io.cpp

Ubuntu Security Notice 6126-1 - It was discovered that libvirt incorrectly handled the nwfilter driver. A local attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. It was discovered that libvirt incorrectly handled queries for the SR-IOV PCI device capabilities. A local attacker could possibly use this issue to cause libvirt to consume resources, leading to a denial of service.

Ubuntu Security Notice 6125-1 - It was discovered that the snap sandbox did not restrict the use of the ioctl system call with a TIOCLINUX request. This could be exploited by a malicious snap to inject commands into the controlling terminal which would then be executed outside of the snap sandbox once the snap had exited. This could allow an attacker to execute arbitrary commands outside of the confined snap sandbox. Note: graphical terminal emulators like xterm, gnome-terminal and others are not affected - this can only be exploited when snaps are run on a virtual console.

Ubuntu Security Notice 6117-1 - It was discovered that Apache Batik incorrectly handled certain inputs. An attacker could possibly use this to perform a cross site request forgery attack. It was discovered that Apache Batik incorrectly handled Jar URLs in some situations. A remote attacker could use this issue to access files on the server. It was discovered that Apache Batik allowed running untrusted Java code from an SVG. An attacker could use this issue to cause a denial of service, or possibly execute arbitrary code.

Ubuntu Security Notice 6124-1 - Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Reima Ishii discovered that the nested KVM implementation for Intel x86 processors in the Linux kernel did not properly validate control registers in certain situations. An attacker in a guest VM could use this to cause a denial of service.