CVE-2016-6622 phpMyAdmin DoS Vulnerability

What is CVE-2016-6622?

CVE-2016-6622 is a medium-severity denial of service vulnerability in Phpmyadmin Phpmyadmin, published on 11 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in phpMyAdmin. An unauthenticated user is able to execute a denial-of-service (DoS) attack by forcing persistent connections when phpMyAdmin is running with $cfg['AllowArbitraryServer']=true. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.

Weakness: CWE-399

Which versions are affected by CVE-2016-6622?

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

Products include Phpmyadmin Phpmyadmin.

How do I fix CVE-2016-6622?

Upgrade phpmyadmin/phpmyadmin to a fixed version for your release line: 4.0.10.17, 4.4.15.8 or 4.6.4.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-6622 being exploited?

There is no known exploitation of CVE-2016-6622 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-2016-6622, DEBIAN-CVE-2016-6622, GHSA-qf3f-7x69-qfv3, UBUNTU-CVE-2016-6622.