Bug 1308835 (CVE-2015-1776)

Summary:	CVE-2015-1776 hadoop: disclosure of encrypted data in Hadoop MapReduce
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	besser82, coolsvap, ctubbsii, dkholia, matt, moceap, rrati
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	hadoop 2.7.2	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-10-13 11:18:35 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:	1308836
Bug Blocks:	1308838

Description Andrej Nemec 2016-02-16 09:10:16 UTC

The encryption key/secret used to encrypt the intermediate data
generated by an Apache Hadoop MapReduce job is stored as a token in
the job’s credentials and are subsequently serialized to disk (
without any additional encryption/protection ) into the machine's
local dirs.  A malicious user who has access to this credentials file
can load the tokens from the file, read the secret and then decrypt
the intermediate data which is also stored in machine local dirs.

External reference:

http://seclists.org/oss-sec/2016/q1/344

Comment 1 Andrej Nemec 2016-02-16 09:13:26 UTC

Created hadoop tracking bugs for this issue:

Affects: fedora-all [bug 1308836]

Comment 2 Christopher Tubbs 2016-06-23 16:24:44 UTC

This vulnerability apply to a feature added to Hadoop in 2.6.x versions, which are not available in Fedora, which currently packages 2.4.1. The workaround is to avoid using this feature. The vulnerability is addressed in 2.7.x.