Home/CVE/ModSecurity / libModSecurity 3.0.0 to 3.0.11 is affected by a WAF bypass for path-based payloads submitted via specially
CVE

CVE-2024-1019

ModSecurity / libModSecurity 3.0.0 to 3.0.11 is affected by a WAF bypass for path-based payloads submitted via specially

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.

HIGH · CVSS 8.6 EPSS 0.00306
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

1
owasp modsecurity>= 3.0.0 and < 3.0.12
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · vulnerability@ncsc.ch
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Jan 2024 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2024:13732-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/34KDQNZE2RS3CWFG5654LNHKXXDPIW5I/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K6ZGABPJK2JPVH2JDFHZ5LQLWGONUH7V/
https://owasp.org/www-project-modsecurity/tab_cves#cve-2024-1019-2024-01-30PatchVendor Advisory
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