Ubuntu security

USN-5407-1: Cairo vulnerabilities Gustavo Grieco, Alberto Garcia, Francisco Oca, Suleman Ali, and others discovered that Cairo incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2016-9082, CVE-2017-9814, CVE-2019-6462) Stephan Bergmann discovered that Cairo incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2020-35492) Source: USN-5407-1: Cairo vulnerabilities

USN-5179-2: BusyBox vulnerability USN-5179-1 fixed vulnerabilities in BusyBox. This update provides the corresponding updates for Ubuntu 16.04 ESM. Original advisory details: It was discovered that BusyBox incorrectly handled certain malformed gzip archives. If a user or automated system were tricked into processing a specially crafted gzip archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-28831) Source: USN-5179-2: BusyBox vulnerability

USN-5244-2: DBus vulnerability USN-5244-1 fixed a vulnerability in DBus. This update provides the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Original advisory details: Daniel Onaca discovered that DBus contained a use-after-free vulnerability, caused by the incorrect handling of usernames sharing the same UID. An attacker could possibly use this issue to cause DBus to crash, resulting in a denial of service. Source: USN-5244-2: DBus vulnerability

USN-5259-2: Cron vulnerabilities USN-5259-1 fixed several vulnerabilities in Cron. This update provides the corresponding update for Ubuntu 18.04 LTS. Original advisory details: It was discovered that the postinst maintainer script in Cron unsafely handled file permissions during package install or update operations. An attacker could possibly use this issue to perform a privilege escalation attack. (CVE-2017-9525) Florian Weimer discovered that Cron incorrectly handled certain memory operations during crontab file creation. An attacker could possibly use this issue to cause a denial of service. (CVE-2019-9704) It was discovered that Cron incorrectly handled user input during crontab file creation. An attacker could possibly use this issue to cause a denial of service. (CVE-2019-9705) It was discovered that Cron contained a use-after-free vulnerability in its force_rescan_user function. An attacker could possibly use this issue to cause a denial of service. (CVE-2019-9706) Source: USN-5259-2: [ more… ]

USN-5405-1: jbig2dec vulnerabilities It was discovered that jbig2dec incorrectly handled memory when parsing invalid files. An attacker could use this issue to cause jbig2dec to crash, leading to a denial of service. (CVE-2017-9216) It was discovered that jbig2dec incorrectly handled memory when processing untrusted input. An attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2020-12268) Source: USN-5405-1: jbig2dec vulnerabilities