Description
This is an information disclosure vulnerability in Apache Hadoop before 2.6.4 and 2.7.x before 2.7.2 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.
Affected products
- Apache Software Foundation / Apache Hadoop2.1.0 to 2.6.3 – 2.1.0 to 2.6.3
- Apache Software Foundation / Apache Hadoop2.7.0 to 2.7.1 – 2.7.0 to 2.7.1