Bug 1209501 – CVE-2015-8860 nodejs-tar: insecure processing of symbolic links during package processing

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Bug 1209501 - (CVE-2015-8860) CVE-2015-8860 nodejs-tar: insecure processing of symbolic links during package processing

Summary:	CVE-2015-8860 nodejs-tar: insecure processing of symbolic links during packag...

Status:	NEW

Aliases:	CVE-2015-8860

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	impact=moderate,public=20150327,repor...
Keywords:	Security

Depends On:	1209504 1209503
Blocks:	1209502
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Reported:	2015-04-07 09:49 EDT by Vasyl Kaigorodov
Modified:	2016-04-21 08:00 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	npm 2.7.5, tar@nodejs 2.0.0
Doc Type:	Bug Fix
Doc Text:	A flaw was found in the way nodejs-tar, a Node.js module for reading and writing of tar archives, handled symbolic links when processing NPM packages. An attacker could potentially use this flaw to rewrite arbitrary files on the system.
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RHEL 7.3 requirements from Atomic Host:
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Description Vasyl Kaigorodov 2015-04-07 09:49:22 EDT

A flaw was found in the way nodejs-tar, a Node.js module for reading and writing of tar archives, handled symbolic links when processing npm packages. An attacker could potentially use this flaw to rewrite arbitrary files on the system.

The fix normalizes symbolic links that point to targets outside the extraction root. This prevents packages containing symbolic links from overwriting targets outside the expected paths for a package.

Upstream announcement: https://github.com/npm/npm/releases/tag/v2.7.5
Upstream fix: https://github.com/npm/npm/commit/300834e91a4e2a95fb7fb59c309e7c3fc91d2312

Comment 1 Vasyl Kaigorodov 2015-04-07 09:51:37 EDT

Created nodejs-tar tracking bugs for this issue:

Affects: fedora-all [bug 1209503]
Affects: epel-all [bug 1209504]

Comment 3 Ján Rusnačko 2015-04-14 07:41:05 EDT

Upstream commits:

https://github.com/npm/node-tar/commit/a5337a6cd58a2d800fc03b3781a25751cf459f28
https://github.com/npm/node-tar/commit/5e6356e0ca256cba659ff24d0befbfe753a04cb6

Comment 4 Andrej Nemec 2016-04-21 08:00:18 EDT

CVE assignment:

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

External references:

https://nodesecurity.io/advisories/57

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