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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2024-01-30T16:09:42.428Z

Updated: 2024-08-01T18:26:30.383Z

Reserved: 2024-01-29T10:28:35.711Z

Link: CVE-2024-1019

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2024-01-30T16:15:47.123

Modified: 2024-02-20T02:15:49.973

Link: CVE-2024-1019

cve-icon Redhat

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