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From Roman Shaposhnik <>
Subject Fwd: [SECURITY] CVE-2016-5001: Apache Hadoop Information Disclosure
Date Sat, 17 Dec 2016 01:36:19 GMT

---------- Forwarded message ----------
From: Arpit Agarwal <>
Date: Fri, Dec 16, 2016 at 1:31 PM
Subject: [SECURITY] CVE-2016-5001: Apache Hadoop Information Disclosure
To: "" <>
Cc: "" <>


The following security vulnerability was found and fixed in Apache Hadoop.

[also announced on,]


CVE-2016-5001: Apache Hadoop Information Disclosure

Severity: Critical

Vendor: The Apache Software Foundation

Versions Affected: Apache Hadoop 2.7.1, 2.6.3 and earlier.

This is an information disclosure vulnerability in the short-circuit
reads feature of HDFS. A local user on an HDFS DataNode may be able to
craft a block token that grants unauthorized read access to random
files by guessing certain fields in the token.

Users on 2.7.x should upgrade to 2.7.2 or later.
Users on 2.6.x or earlier releases should upgrade to 2.6.4 or later.

A local user may be able to gain unauthorized read access to files.

This issue was reported by Kihwal Lee of Yahoo Inc.

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