Ubuntu Security Notice 4583-1 - It was discovered that PHP incorrectly handled certain encrypt ciphers. An attacker could possibly use this issue to decrease security or cause incorrect encryption data. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. It was discovered that PHP incorrectly handled certain HTTP cookies. An attacker could possibly use this issue to forge cookie which is supposed to be secure. Various other issues were also addressed.
345d3017d78252f799c8d76253a91dcf212333c2d6449dc1200daa6462b04731