[USN-5659-1] kitty vulnerabilities
== Ubuntu Security Notice USN-5659-1 October 05, 2022 kitty vulnerabilities == A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: kitty could be made to run programs if it opened a specially crafted image or desktop notification. Software Description: - kitty: fast, featureful, GPU based terminal emulator Details: Stephane Chauveau discovered that kitty incorrectly handled image filenames with special characters in error messages. A remote attacker could possibly use this to execute arbitrary commands. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-35605) Carter Sande discovered that kitty incorrectly handled escape sequences in desktop notifications. A remote attacker could possibly use this to execute arbitrary commands. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-41322) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: kitty 0.21.2-1ubuntu0.22.04.1 Ubuntu 20.04 LTS: kitty 0.15.0-1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5659-1 CVE-2020-35605, CVE-2022-41322 Package Information: https://launchpad.net/ubuntu/+source/kitty/0.21.2-1ubuntu0.22.04.1 https://launchpad.net/ubuntu/+source/kitty/0.15.0-1ubuntu0.2 OpenPGP_0xD60B83C90513BD4F.asc Description: OpenPGP public key OpenPGP_signature Description: OpenPGP digital signature
[USN-5660-1] Linux kernel (GCP) vulnerabilities
== Ubuntu Security Notice USN-5660-1 October 06, 2022 linux-gcp-5.4 vulnerabilities == A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems Details: It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not provide sufficient randomization when calculating port offsets. An attacker could possibly use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296) Norbert Slusarek discovered that a race condition existed in the perf subsystem in the Linux kernel, resulting in a use-after-free vulnerability. A privileged local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1729) It was discovered that the device-mapper verity (dm-verity) driver in the Linux kernel did not properly verify targets being loaded into the device- mapper table. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-2503) Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did not properly handle rules that truncated packets below the packet header size. When such rules are in place, a remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-36946) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-5.4.0-1089-gcp 5.4.0-1089.97~18.04.1 linux-image-gcp 5.4.0.1089.68 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-5660-1 CVE-2021-33655, CVE-2022-1012, CVE-2022-1729, CVE-2022-2503, CVE-2022-32296, CVE-2022-36946 Package Information: https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1089.97~18.04.1 OpenPGP_signature Description: OpenPGP digital signature
[USN-5658-1] DHCP vulnerabilities
== Ubuntu Security Notice USN-5658-1 October 05, 2022 isc-dhcp vulnerabilities == A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in DHCP. Software Description: - isc-dhcp: DHCP server and client Details: It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service. (CVE-2022-2928) It was discovered that DHCP incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause DHCP clients and servers to consume resources, leading to a denial of service. (CVE-2022-2929) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: isc-dhcp-client 4.4.1-2.3ubuntu2.3 isc-dhcp-server 4.4.1-2.3ubuntu2.3 Ubuntu 20.04 LTS: isc-dhcp-client 4.4.1-2.1ubuntu5.20.04.4 isc-dhcp-server 4.4.1-2.1ubuntu5.20.04.4 Ubuntu 18.04 LTS: isc-dhcp-client 4.3.5-3ubuntu7.4 isc-dhcp-server 4.3.5-3ubuntu7.4 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5658-1 CVE-2022-2928, CVE-2022-2929 Package Information: https://launchpad.net/ubuntu/+source/isc-dhcp/4.4.1-2.3ubuntu2.3 https://launchpad.net/ubuntu/+source/isc-dhcp/4.4.1-2.1ubuntu5.20.04.4 https://launchpad.net/ubuntu/+source/isc-dhcp/4.3.5-3ubuntu7.4 OpenPGP_signature Description: OpenPGP digital signature
