Description (CNA)
ngx_cache_purge before 3.0.4 can allow file deletion via a symlink attack in certain situations where nginx and a served application (e.g., WordPress) run under the same user account. The attacker must be able to create a symlink inside the cache path. Version 3.0.4 fixes this for the case of a symlink created at an arbitrary earlier time, but does not resolve an applicable TOCTOU race condition. (The ngx_cache_purge module follows symlinks while walking the cache directory tree during purge operations. The module relies on nginx's ngx_walk_tree(), which relies on stat() and therefore follows symlinks.)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| denji / ngx_cache_purge | affected 2.4.0 through 2.5.6; affected 3.0.0 before 3.0.4 |
CWE
CWE-61
References
- https://github.com/nginx-modules/ngx_cache_purge/pull/72
- https://github.com/nginx-modules/ngx_cache_purge/commit/a6da1352f52a8a02dd6828e88c39ed42fddcee96
- https://github.com/nginx-modules/ngx_cache_purge/releases/tag/3.0.4
ADP enrichment
No English description supplied.
No references supplied.