[USN-5355-2] zlib vulnerability


========================================================================== Ubuntu Security Notice USN-5355-2 March 30, 2022
zlib vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM – Ubuntu 14.04 ESM
Summary:
zlib could be made to crash or run programs if it received specially crafted input.
Software Description: – zlib: compression library – 32 bit runtime
Details:
USN-5355-1 fixed a vulnerability in zlib. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
Danilo Ramos discovered that zlib incorrectly handled memory when performing certain deflating operations. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 ESM: lib32z1 1:1.2.8.dfsg-2ubuntu4.3+esm1 lib64z1 1:1.2.8.dfsg-2ubuntu4.3+esm1 libx32z1 1:1.2.8.dfsg-2ubuntu4.3+esm1 zlib1g 1:1.2.8.dfsg-2ubuntu4.3+esm1
Ubuntu 14.04 ESM: lib32z1 1:1.2.8.dfsg-1ubuntu1.1+esm1 lib64z1 1:1.2.8.dfsg-1ubuntu1.1+esm1 libx32z1 1:1.2.8.dfsg-1ubuntu1.1+esm1 zlib1g 1:1.2.8.dfsg-1ubuntu1.1+esm1
After a standard system update you need to reboot your computer to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5355-2 ubuntu.com/security/notices/USN-5355-1 CVE-2018-25032