Vulnerability Details : CVE-2016-9643
The regex code in Webkit 2.4.11 allows remote attackers to cause a denial of service (memory consumption) as demonstrated in a large number of ($ (open parenthesis and dollar) followed by {-2,16} and a large number of +) (plus close parenthesis).
Vulnerability category: Denial of service
Products affected by CVE-2016-9643
- cpe:2.3:a:webkit:webkit:2.4.11:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9643
0.76%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9643
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2016-9643
-
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-2016-9643
-
http://www.openwall.com/lists/oss-security/2016/11/26/2
oss-security - CVE Request: resource exhaustion in regex expression handling in WebKitMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/201706-15
WebKitGTK+: Multiple vulnerabilities (GLSA 201706-15) — Gentoo security
-
http://www.securitytracker.com/id/1038137
Apple Safari Multiple Bugs Let Remote Users Obtain Potentially Sensitive Information, Conduct Cross-Site Scripting Attacks, Bypass Security, Deny Service, and Execute Arbitrary Code - SecurityTracker
-
http://www.openwall.com/lists/oss-security/2016/11/26/5
oss-security - Re: CVE Request: resource exhaustion in regex expression handling in WebKitMailing List;Third Party Advisory
-
http://www.securityfocus.com/bid/94559
WebKit CVE-2016-9643 Denial of Service Vulnerability
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