CVE-2024-34340 Affecting cacti package, versions <1.2.26+ds1-1ubuntu0.1

Note: Versions mentioned in the description apply only to the upstream cacti package and not the cacti package as distributed by Ubuntu. See How to fix? for Ubuntu:24.04 relevant fixed versions and status.

Cacti provides an operational monitoring and fault management framework. Prior to version 1.2.27, Cacti calls compat_password_hash when users set their password. compat_password_hash use password_hash if there is it, else use md5. When verifying password, it calls compat_password_verify. In compat_password_verify, password_verify is called if there is it, else use md5. password_verify and password_hash are supported on PHP < 5.5.0, following PHP manual. The vulnerability is in compat_password_verify. Md5-hashed user input is compared with correct password in database by $md5 == $hash. It is a loose comparison, not ===. It is a type juggling vulnerability. Version 1.2.27 contains a patch for the issue.

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2024-34340
• https://github.com/Cacti/cacti/security/advisories/GHSA-37x7-mfjv-mm7m
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBEOAFKRARQHTDIYSL723XAFJ2Q6624X/