SECURITY

USN-4583-2: PHP vulnerabilities USN-4583-1 fixed vulnerabilities in PHP. This update provides the corresponding update for Ubuntu 20.10. Original advisory details: 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. (CVE-2020-7069) It was discorevered that PHP incorrectly handled certain HTTP cookies. An attacker could possibly use this issue to forge cookie which is supposed to be secure. (CVE-2020-7070) Source: USN-4583-2: PHP vulnerabilities

USN-4604-1: MySQL vulnerabilities Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues. MySQL has been updated to 8.0.22 in Ubuntu 20.04 LTS and Ubuntu 20.10. Ubuntu 16.04 LTS and Ubuntu 18.04 LTS have been updated to MySQL 5.7.32. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-32.html https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-22.html https://www.oracle.com/security-alerts/cpuoct2020.html Source: USN-4604-1: MySQL vulnerabilities

USN-4599-2: Firefox vulnerabilities USN-4599-1 fixed vulnerabilities in Firefox. This update provides the corresponding updates for Ubuntu 16.04 LTS. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the prompt for opening an external application, obtain sensitive information, or execute arbitrary code. Source: USN-4599-2: Firefox vulnerabilities

USN-4562-2: kramdown vulnerability It was discovered that kramdown insecurely handled certain crafted input. An attacker could use this vulnerability to read restricted files or execute arbitrary code. Source: USN-4562-2: kramdown vulnerability

USN-4602-1: Perl vulnerabilities ManhND discovered that Perl incorrectly handled certain regular expressions. In environments where untrusted regular expressions are evaluated, a remote attacker could possibly use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-10543) Hugo van der Sanden and Slaven Rezic discovered that Perl incorrectly handled certain regular expressions. In environments where untrusted regular expressions are evaluated, a remote attacker could possibly use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-10878) Sergey Aleynikov discovered that Perl incorrectly handled certain regular expressions. In environments where untrusted regular expressions are evaluated, a remote attacker could possibly use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-12723) Source: USN-4602-1: Perl vulnerabilities