[USN-5454-2] CUPS vulnerabilities

========================================================================== Ubuntu Security Notice USN-5454-2 May 31, 2022
cups vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM
Several security issues were fixed in CUPS.
Software Description: – cups: Common UNIX Printing System(tm)
USN-5454-1 fixed several vulnerabilities in CUPS. This update provides the corresponding update for Ubuntu 16.04 ESM.
Original advisory details:
Joshua Mason discovered that CUPS incorrectly handled the secret key used to access the administrative web interface. A remote attacker could possibly use this issue to open a session as an administrator and execute arbitrary code. (CVE-2022-26691)
It was discovered that CUPS incorrectly handled certain memory operations when handling IPP printing. A remote attacker could possibly use this issue to cause CUPS to crash, leading to a denial of service, or obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2019-8842, CVE-2020-10001)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 ESM: cups 2.1.3-4ubuntu0.11+esm1
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5454-2 ubuntu.com/security/notices/USN-5454-1 CVE-2019-8842, CVE-2020-10001, CVE-2022-26691