CVEvulnerability

CVE-2022-39958

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])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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-863

Description

The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass to sequentially exfiltrate small and undetectable sections of data by repeatedly submitting an HTTP Range header field with a small byte range. A restricted resource, access to which would ordinarily be detected, may be exfiltrated from the backend, despite being protected by a web application firewall that uses CRS. Short subsections of a restricted resource may bypass pattern matching techniques and allow undetected access. 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 and to configure a CRS paranoia level of 3 or higher.

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-863 Incorrect Authorization weakness

References