CVE-2021-41186
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-41186
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-41186.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-41186
- Aliases
- Related
- Withdrawn
- 2024-05-08T06:51:35.997119Z
- Published
- 2021-10-29T14:15:07Z
- Modified
- 2023-12-06T00:46:31.627273Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Fluentd collects events from various data sources and writes them to files to help unify logging infrastructure. The parserapache2 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 parserapache2 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_PLUGINor--pluginoption of fluentd). - References
Affected packages
Git / github.com/fluent/fluentd
Affected versions
v0.*
v0.14.14
v0.14.15
v0.14.16
v0.14.17
v0.14.18
v0.14.19
v0.14.20
v0.14.20.rc1
v0.14.21
v0.14.22
v0.14.22.rc1
v0.14.22.rc2
v0.14.23
v0.14.23.rc1
v0.14.24
v0.14.25
v1.*
v1.0.0
v1.0.0.rc1
v1.0.1
v1.0.2
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.10.0
v1.10.1
v1.10.2
v1.10.3
v1.10.4
v1.11.0
v1.11.1
v1.11.2
v1.11.3
v1.11.4
v1.11.5
v1.12.0
v1.12.0.rc1
v1.12.0.rc2
v1.12.1
v1.12.2
v1.12.3
v1.12.4
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.14.0
v1.14.0.rc
v1.14.1
v1.2.0
v1.2.0.pre1
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.4.rc1
v1.2.5
v1.2.5.rc1
v1.2.6
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.4.0
v1.4.1
v1.4.2
v1.5.0
v1.5.0.rc1
v1.5.1
v1.6.0
v1.6.1
v1.6.2
v1.6.3
v1.7.0
v1.7.0.rc1
v1.7.1
v1.7.2
v1.7.3
v1.8.0
v1.8.0.rc1
v1.8.0.rc2
v1.8.0.rc3
v1.8.1
v1.9.0
v1.9.0.rc1
v1.9.0.rc2
v1.9.1
v1.9.2
v1.9.3