Bug 1209496 (CVE-2015-8855)

Summary:	CVE-2015-8855 nodejs-semver: npm Regular Expression Denial of Service during package versions parsing
Product:	[Other] Security Response	Reporter:	Vasyl Kaigorodov <vkaigoro>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jorton, jrusnack, mmaslano, tchollingsworth, thrcka
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	npm 2.7.5, semver 4.3.2	Doc Type:	Bug Fix
Doc Text:	A denial of service flaw was found in the way semver, the semantic version comparison library for Node.js, parsed certain package versions. A remote attacker could use a specially crafted version string that, when processed, would lead to excessive CPU consumption.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-04-30 08:58:53 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1209498, 1209499
Bug Blocks:	1209497

Description Vasyl Kaigorodov 2015-04-07 13:39:24 UTC

semver is vulnerable to regular expression denial of service (ReDoS) when extremely long version strings are parsed:

https://nodesecurity.io/advisories/semver_redos

Upstream fix:
https://github.com/npm/npm/commit/0dc68757cffd5397c280bc71365d106523a5a052

Comment 1 Vasyl Kaigorodov 2015-04-07 13:41:53 UTC

Created nodejs-semver tracking bugs for this issue:

Affects: fedora-all [bug 1209498]
Affects: epel-all [bug 1209499]

Comment 3 Ján Rusnačko 2015-04-08 08:27:06 UTC

External References:

https://nodesecurity.io/advisories/semver_redos

Comment 5 Andrej Nemec 2016-04-22 08:00:13 UTC

CVE assignment:

http://seclists.org/oss-sec/2016/q2/122