NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, for systems with Address Space Layout Randomization (ASLR ) disabled, code execution is possible. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
| Vendor | Product | Versions |
|---|---|---|
| f5 | nginx plus | R36, R32, 0.6.27, 1.30.0 |
Updated affected versions to include 1.30.0, changed severity to CRITICAL, updated CVSS score to 9.2, and added new tags.
Updated vendor to F5, product to NGINX Open Source, severity to CRITICAL, and noted that there is no exploit available.
Initial creation
