CVE-2022-39956

Published on: Not Yet Published

Last Modified on: 11/14/2022 03:15:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Certain versions of Fedora from Fedoraproject contain the following vulnerability:

The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass for HTTP multipart requests by submitting a payload that uses a character encoding scheme via the Content-Type or the deprecated Content-Transfer-Encoding multipart MIME header fields that will not be decoded and inspected by the web application firewall engine and the rule set. The multipart payload will therefore bypass detection. A vulnerable backend that supports these encoding schemes can potentially be exploited. 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 upgrade to 3.2.2 and 3.3.3 respectively. The mitigation against these vulnerabilities depends on the installation of the latest ModSecurity version (v2.9.6 / v3.0.8).

  • CVE-2022-39956 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as CRITICAL severity.
  • Affected Vendor/Software: URL Logo OWASP - ModSecurity Core Rule Set version = 3.0.x
  • Affected Vendor/Software: URL Logo OWASP - ModSecurity Core Rule Set version = 3.1.x
  • Affected Vendor/Software: URL Logo OWASP - ModSecurity Core Rule Set version <= 3.2.1
  • Affected Vendor/Software: URL Logo OWASP - ModSecurity Core Rule Set version <= 3.3.2

CVSS3 Score: 9.8 - CRITICAL

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVE References

Description Tags Link
[SECURITY] Fedora 35 Update: mod_security-2.9.6-1.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2022-85a85c84b3
[SECURITY] Fedora 37 Update: mod_security_crs-3.3.4-1.fc37 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2022-1fd73a5285
[SECURITY] Fedora 36 Update: mod_security-2.9.6-1.fc36 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2022-90708b46e3
CRS Version 3.3.3 and 3.2.2 (covering several CVEs) – OWASP ModSecurity Core Rule Set coreruleset.org
text/html
URL Logo CONFIRM coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/

Related QID Numbers

  • 283212 Fedora Security Update for mod_security (FEDORA-2022-85a85c84b3)
  • 283213 Fedora Security Update for mod_security (FEDORA-2022-90708b46e3)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
FedoraprojectFedora35AllAllAll
Operating
System
FedoraprojectFedora36AllAllAll
ApplicationOwaspOwasp Modsecurity Core Rule SetAllAllAllAll
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*:
  • cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*:

Discovery Credit

@terjanq (Jan Gora)

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2022-39956 : The OWASP ModSecurity Core Rule Set CRS is affected by a partial rule set bypass for HTTP multip… twitter.com/i/web/status/1… 2022-09-20 06:28:30
Reddit Logo Icon /r/netcve CVE-2022-39956 2022-09-20 07:38:15
© CVE.report 2022 Twitter Nitter Twitter Viewer |

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