CVE-2022-39955

See a problem?
Source
https://nvd.nist.gov/vuln/detail/CVE-2022-39955
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-39955.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-39955
Related
Published
2022-09-20T07:15:12Z
Modified
2024-06-06T14:06:27.721873Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass by submitting a specially crafted HTTP Content-Type header field that indicates multiple character encoding schemes. A vulnerable back-end can potentially be exploited by declaring multiple Content-Type "charset" names and therefore bypassing the configurable CRS Content-Type header "charset" allow list. An encoded payload can bypass CRS detection this way and may then be decoded by the backend. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively.

References

Affected packages

Git / github.com/coreruleset/coreruleset

Affected ranges

Type
GIT
Repo
https://github.com/coreruleset/coreruleset
Events

Affected versions

v3.*

v3.0.0
v3.0.1
v3.0.2
v3.1.0-rc1
v3.2-rc1
v3.2.0
v3.2.0-rc1
v3.2.0-rc2
v3.2.0-rc3
v3.2.1