Bug 1308835 (CVE-2015-1776) - CVE-2015-1776 hadoop: disclosure of encrypted data in Hadoop MapReduce
Summary: CVE-2015-1776 hadoop: disclosure of encrypted data in Hadoop MapReduce
Alias: CVE-2015-1776
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1308836
Blocks: 1308838
TreeView+ depends on / blocked
Reported: 2016-02-16 09:10 UTC by Andrej Nemec
Modified: 2021-02-17 04:20 UTC (History)
7 users (show)

Fixed In Version: hadoop 2.7.2
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2016-10-13 11:18:35 UTC

Attachments (Terms of Use)

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:


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.

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