CVE-2016-9856 phpMyAdmin XSS Vulnerability

What is CVE-2016-9856?

CVE-2016-9856 is a medium-severity cross-site scripting vulnerability in Phpmyadmin Phpmyadmin, published on 11 Dec 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An XSS issue was discovered in phpMyAdmin because of an improper fix for CVE-2016-2559 in PMASA-2016-10. This issue is resolved by using a copy of a hash to avoid a race condition. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

Weakness: CWE-79

Which versions are affected by CVE-2016-9856?

6 open source packages ship an affected version, including phpmyadmin/phpmyadmin. It affects 1 product.

Products include Phpmyadmin Phpmyadmin.

How do I fix CVE-2016-9856?

Upgrade phpmyadmin/phpmyadmin to a fixed version for your release line: 4.0.10.18, 4.4.15.9 or 4.6.5.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2016-9856 being exploited?

There is no known exploitation of CVE-2016-9856 in the wild and no public exploit code.

Other vulnerabilities in Phpmyadmin Phpmyadmin

• CVE-2008-7251 Misconfiguration in n/a Critical 10.0
• CVE-2008-7252 phpMyAdmin unsafely handles temporary files Critical 10.0
• CVE-2007-0203 Other in n/a Critical 10.0
• CVE-2004-1147 Command injection in n/a Critical 10.0
• CVE-2020-22452 phpmyadmin contains SQL Injection vulnerability Critical 9.8

All Phpmyadmin Phpmyadmin vulnerabilities

Sources

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

Also known as ALPINE-CVE-2016-9856, CVE-2016-1000366, DEBIAN-CVE-2016-9856, GHSA-j8mx-x32r-5rf4, UBUNTU-CVE-2016-9856.