CVEvulnerability

CVE-2022-39957

7.5 HIGH Published 2022-09-20 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-09-20
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.3 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-116, CWE-693

Description

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.

Affected configurations

• owasp owasp modsecurity core rule set (>= 3.0.0 < 3.2.2) • owasp owasp modsecurity core rule set (>= 3.3.0 < 3.3.3) • fedoraproject fedora 35 • fedoraproject fedora 36 • fedoraproject fedora 37 • debian debian linux 10.0

Related

Weakness · CWE (2)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-693 Protection Mechanism Failure weakness

References