CVE-2016-4323 Path traversal in Pidgin

What is CVE-2016-4323?

CVE-2016-4323 is a low-severity path traversal vulnerability in Canonical Ubuntu Linux, published on 6 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A directory traversal exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent from the server could potentially result in an overwrite of files. A malicious server or someone with access to the network traffic can provide an invalid filename for a splash image triggering the vulnerability.

Weakness: CWE-22

Which versions are affected by CVE-2016-4323?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Pidgin Pidgin.

How do I fix CVE-2016-4323?

Apply the vendor's patch.

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

Is CVE-2016-4323 being exploited?

There is no known exploitation of CVE-2016-4323 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-4323, GHSA-7w5x-jm9f-8g7x, UBUNTU-CVE-2016-4323.