Vulnerability Details : CVE-2019-11390
An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf allows remote attackers to cause a denial of service (ReDOS) by entering a specially crafted string with set_error_handler# at the beginning and nested repetition operators. NOTE: the software maintainer disputes that this is a vulnerability because the issue cannot be exploited via ModSecurity
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2019-11390
Probability of exploitation activity in the next 30 days: 0.19%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 55 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-11390
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2019-11390
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11390
-
https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1372
Regarding the ReDOS exploit strings & the un-reproducibility · Issue #1372 · SpiderLabs/owasp-modsecurity-crs · GitHubExploit;Issue Tracking;Third Party Advisory
-
https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1358
Vulnerable regexp in rule 933160 · Issue #1358 · SpiderLabs/owasp-modsecurity-crs · GitHubIssue Tracking;Third Party Advisory
Products affected by CVE-2019-11390
- cpe:2.3:a:modsecurity:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*