SB2022092752 - openEuler update for mod_security_crs

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Main Vulnerability Database SB2022092752

SB2022092752 - openEuler update for mod_security_crs

Published: September 27, 2022

Security Bulletin ID SB2022092752
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2022-39955)

The vulnerability allows a remote attacker to bypass filtration rules.

The vulnerability exists due to insufficient validation of user-supplied input when parsing HTTP Content-Type header field that indicates multiple character encoding schemes. A remote attacker send a specially crafted HTTP request and bypass the configurable CRS Content-Type header "charset" allow list.


2) Input validation error (CVE-ID: CVE-2022-39956)

The vulnerability allows a remote attacker to bypass filtration rules.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send 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.


Remediation

Install update from vendor's website.

References