CVE-2014-1876 Path traversal in n/a

Medium 4.4 Published 10 Feb 2014 Updated 6 Aug 2024

Local attackers can overwrite arbitrary files via symlink attacks on temporary logs in Java unpack200, requiring local access.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2014-1876?

CVE-2014-1876 is a medium-severity path traversal vulnerability in Oracle Openjdk, published on 10 Feb 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The unpacker::redirect_stdio function in unpack.cpp in unpack200 in OpenJDK 6, 7, and 8; Oracle Java SE 5.0u61, 6u71, 7u51, and 8; JRockit R27.8.1 and R28.3.1; and Java SE Embedded 7u51 does not securely create temporary files when a log file cannot be opened, which allows local users to overwrite arbitrary files via a symlink attack on /tmp/unpack.log.

Weakness: CWE-59

Which versions are affected by CVE-2014-1876?

It affects 1 product.

Products include Oracle Openjdk.

How do I fix CVE-2014-1876?

Upgrade to a fixed version.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2014-1876 being exploited?

There is no known exploitation of CVE-2014-1876 in the wild and no public exploit code.

All Oracle Openjdk vulnerabilities

Sources

Also known as GHSA-97jm-5rh5-84f8, UBUNTU-CVE-2014-1876.