CVE-2022-39957

Published on: Not Yet Published

Last Modified on: 01/30/2023 09:15:00 PM UTC

CVE-2022-39957

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 response body bypass. A client can issue an HTTP Accept header field containing an optional "charset" parameter in order to receive the response in an encoded form. Depending on the "charset", this response can not be decoded by the web application firewall. A restricted resource, access to which would ordinarily be detected, may therefore bypass detection. 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.

CVE-2022-39957 has been assigned by [email protected] to track the vulnerability - currently rated as HIGH severity.
Affected Vendor/Software: OWASP - ModSecurity Core Rule Set version = 3.0.x
Affected Vendor/Software: OWASP - ModSecurity Core Rule Set version = 3.1.x
Affected Vendor/Software: OWASP - ModSecurity Core Rule Set version <= 3.2.1
Affected Vendor/Software: OWASP - ModSecurity Core Rule Set version <= 3.3.2

CVSS3 Score: 7.5 - HIGH

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

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	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	FEDORA FEDORA-2022-1fd73a5285
[SECURITY] [DLA 3293-1] modsecurity-crs security update	lists.debian.org text/html	MLIST [debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update
[SECURITY] Fedora 36 Update: mod_security-2.9.6-1.fc36 - package-announce - Fedora Mailing-Lists	lists.fedoraproject.org text/html	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	CONFIRM coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/

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Related QID Numbers

181522 Debian Security Update for modsecurity-crs (DLA 3293-1)
283212 Fedora Security Update for mod_security (FEDORA-2022-85a85c84b3)
283213 Fedora Security Update for mod_security (FEDORA-2022-90708b46e3)
283488 Fedora Security Update for mod_security (FEDORA-2022-1fd73a5285)

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Fedoraproject	Fedora	35	All	All	All
Operating System	Fedoraproject	Fedora	36	All	All	All
Operating System	Fedoraproject	Fedora	37	All	All	All
Application	Owasp	Owasp Modsecurity Core Rule Set	All	All	All	All

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*:
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*:
cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*:

Discovery Credit

@Karel_Origin (Karel Knibbe)

Social Mentions

Source	Title	Posted (UTC)
@CVEreport	CVE-2022-39957 : The OWASP ModSecurity Core Rule Set CRS is affected by a response body bypass. A client can issu… twitter.com/i/web/status/1…	2022-09-20 06:28:59
/r/netcve	CVE-2022-39957	2022-09-20 07:38:16