CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
AI Score
Confidence
Low
EPSS
Percentile
20.6%
ModSecurity / libModSecurity 3.0.0 to 3.0.11 is affected by a WAF bypass
for path-based payloads submitted via specially crafted request URLs.
ModSecurity v3 decodes percent-encoded characters present in request URLs
before it separates the URL path component from the optional query string
component. This results in an impedance mismatch versus RFC compliant
back-end applications. The vulnerability hides an attack payload in the
path component of the URL from WAF rules inspecting it. A back-end may be
vulnerable if it uses the path component of request URLs to construct
queries. Integrators and users are advised to upgrade to 3.0.12. The
ModSecurity v2 release line is not affected by this vulnerability.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | modsecurity | < any | UNKNOWN |
ubuntu | 22.04 | noarch | modsecurity | < any | UNKNOWN |
ubuntu | 24.04 | noarch | modsecurity | < any | UNKNOWN |