Vulnerability Details : CVE-2016-9954
The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.
Vulnerability category: Denial of service
Products affected by CVE-2016-9954
- cpe:2.3:a:irregex_project:irregex:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9954
0.45%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 72 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9954
| 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-2016-9954
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-9954
-
http://www.openwall.com/lists/oss-security/2016/12/15/8
oss-security - Re: CVE Request: IrRegular Expressions resource exhaustion in regex compilation [was: Re: CVE Request: resource exhaustion in regex expression handling in WebKit]Mailing List;Third Party Advisory
-
https://github.com/ashinn/irregex/commit/a16ffc86eca15fca9e40607d41de3cea9cf868f1
Fix exponential explosion in backtrack compilation · ashinn/irregex@a16ffc8 · GitHubPatch;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1413990
1413990 – (CVE-2016-9954) CVE-2016-9954 chicken: Excessive resource consumption due to irregex regular expression parsingIssue Tracking;Third Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/94942
Irregex CVE-2016-9954 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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