CVE-2021-41186
Summary
| CVE | CVE-2021-41186 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-10-29 14:15:00 UTC |
| Updated | 2021-11-03 00:11:00 UTC |
| Description | Fluentd collects events from various data sources and writes them to files to help unify logging infrastructure. The parser_apache2 plugin in Fluentd v0.14.14 to v1.14.1 suffers from a regular expression denial of service (ReDoS) vulnerability. A broken apache log with a certain pattern of string can spend too much time in a regular expression, resulting in the potential for a DoS attack. This issue is patched in version 1.14.2 There are two workarounds available. Either don't use parser_apache2 for parsing logs (which cannot guarantee generated by Apache), or put patched version of parser_apache2.rb into /etc/fluent/plugin directory (or any other directories specified by the environment variable `FLUENT_PLUGIN` or `--plugin` option of fluentd). |
Risk And Classification
Problem Types: CWE-400
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| fluentd/CHANGELOG.md at master · fluent/fluentd · GitHub | MISC | github.com | |
| ReDoS vulnerability in parser_apache2 · Advisory · fluent/fluentd · GitHub | CONFIRM | github.com | |
| Page not found · GitHub · GitHub | MISC | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 900384 Common Base Linux Mariner (CBL-Mariner) Security Update for rubygem-fluentd (6279)