CVE-2022-24070

La función mod_dav_svn de Subversion es vulnerable a una corrupción de memoria. Mientras buscan reglas de autorización basadas en rutas, los servidores mod_dav_svn pueden intentar usar memoria que ya ha sido liberada. Afecta a los servidores mod_dav_svn de Subversion 1.10.0 a 1.14.1 (inclusive). Los servidores que no usan mod_dav_svn no están afectados

A use-after-free vulnerability was found in Subversion in the mod_dav_svn Apache HTTP server (HTTPd) module. While looking up path-based authorization (authz) rules, multiple calls to the post_config hook can invalidate cached pointers to object-pools, which Subversion subsequently uses. This issue crashes the single HTTPd worker thread or the entire HTTPd server process, depending on the configuration of the Apache HTTPd server.

Evgeny Kotkov discovered that subversion servers did not properly follow path-based authorization rules in certain cases. An attacker could potentially use this issue to retrieve information about private paths. Thomas Weißschuh discovered that subversion servers did not properly handle memory in certain configurations. A remote attacker could potentially use this issue to cause a denial of service or other unspecified impact.