449
VMScore

CVE-2020-15598

Published: 06/10/2020 Updated: 11/04/2024
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 449
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Summary

Trustwave ModSecurity 3.x up to and including 3.0.4 allows denial of service via a special request. NOTE: The discoverer reports "Trustwave has signaled they are disputing our claims." The CVE suggests that there is a security issue with how ModSecurity handles regular expressions that can result in a Denial of Service condition. The vendor does not consider this as a security issue because1) there is no default configuration issue here. An attacker would need to know that a rule using a potentially problematic regular expression was in place, 2) the attacker would need to know the basic nature of the regular expression itself to exploit any resource issues. It's well known that regular expression usage can be taxing on system resources regardless of the use case. It is up to the administrator to decide on when it is appropriate to trade resources for potential security benefit

Vulnerability Trend

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trustwave modsecurity

debian debian linux 10.0

Vendor Advisories

Ervin Hegedues discovered that ModSecurity v3 enabled global regular expression matching which could result in denial of service For additional information please refer to corerulesetorg/20200914/cve-2020-15598/ For the stable distribution (buster), this problem has been fixed in version 303-1+deb10u2 We recommend that you upgrade your ...

Mailing Lists

<!--X-Body-Begin--> <!--X-User-Header--> Full Disclosure mailing list archives <!--X-User-Header-End--> <!--X-TopPNI--> By Date By Thread </form> <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> ModSecurity v3 affected by DoS (CVE-2020-15598) <!--X-Subject-Header-End--> <!--X-Head-of-Message--> From: Christian ...