http://bugzilla.opensuse.org/show_bug.cgi?id=1192262 Bug ID: 1192262 Summary: VUL-0: CVE-2021-41186: fluentd: ReDoS vulnerability in parser_apache2 in versions 0.14.14 to 1.14.1 Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.4 Hardware: Other URL: https://smash.suse.de/issue/313909/ OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Security Assignee: wolfgang.engel@suse.com Reporter: carlos.lopez@suse.com QA Contact: security-team@suse.de Found By: Security Response Team Blocker: --- rh#2019184 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). References: https://bugzilla.redhat.com/show_bug.cgi?id=2019184 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-41186 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41186 https://github.com/fluent/fluentd/blob/master/CHANGELOG.md#v1142 https://github.com/github/securitylab-vulnerabilities/blob/52dc4a2a828c6dc24... https://github.com/fluent/fluentd/security/advisories/GHSA-hwhf-64mh-r662 -- You are receiving this mail because: You are on the CC list for the bug.