CVE-2016-6606
Published: 11 December 2016
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
phpmyadmin Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4:4.6.4+dfsg1-1)
|
| bionic |
Not vulnerable
(4:4.6.4+dfsg1-1)
|
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Released
(4:4.0.10-1ubuntu0.1)
|
|
| upstream |
Released
(4:4.6.4+dfsg1-1)
|
|
| xenial |
Released
(4:4.5.4.1-2ubuntu2.1)
|
|
| yakkety |
Not vulnerable
(4:4.6.4+dfsg1-1)
|
|
| zesty |
Not vulnerable
(4:4.6.4+dfsg1-1)
|
|
|
Patches: upstream: https://github.com/phpmyadmin/phpmyadmin/commit/cd682a6 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| 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 |