CVE-2016-6606

Publication date 11 December 2016

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

8.1 · High

Score breakdown

An issue was discovered in cookie encryption in phpMyAdmin. The decryption of the username/password is vulnerable to a padding oracle attack. This can allow an attacker who has access to a user’s browser cookie file to decrypt the username and password. Furthermore, the same initialization vector (IV) is used to hash the username and password stored in the phpMyAdmin cookie. If a user has the same password as their username, an attacker who examines the browser cookie can see that they are the same - but the attacker can not directly decode these values from the cookie as it is still hashed. 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.

From the Ubuntu Security Team

It was discovered that phpmyadmin incorrectly handled cookie encryption. An attacker with access to cookies could possibly use this to determine information about user credentials.

Status

Package Ubuntu Release Status
phpmyadmin 18.04 LTS bionic
Not affected
17.10 artful
Not affected
17.04 zesty
Not affected
16.10 yakkety
Not affected
16.04 LTS xenial
Fixed 4:4.5.4.1-2ubuntu2.1
14.04 LTS trusty
Fixed 4:4.0.10-1ubuntu0.1
12.04 LTS precise Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
phpmyadmin

Severity score breakdown

Parameter Value
Base score 8.1 · High
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H