CVE intelligence and bounded remediation
CVE-2016-6606 — An issue was discovered in cookie encryption in phpMyAdmin
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.
- Severity
- High
- CVSS
- 8.1 (3.0)
- Published
- 2016-12-11
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-200, CWE-310
Affected products
- phpmyadmin / phpmyadmin / 4.4.0
- phpmyadmin / phpmyadmin / 4.4.1
- phpmyadmin / phpmyadmin / 4.4.1.1
- phpmyadmin / phpmyadmin / 4.4.2
- phpmyadmin / phpmyadmin / 4.4.3
- phpmyadmin / phpmyadmin / 4.4.4
Showing 6 representative product identities from 60 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.
Matched remediation archetype
Information disclosure and sensitive data exposure
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Trace sensitive data through responses, errors, logs, metrics, traces, caches, exports, files, backups, and client bundles.
- Identify affected subjects, tenants, retention windows, access controls, and downstream copies without opening unnecessary sensitive records.
- Review metadata, timing, status, length, and existence signals as well as direct content disclosure.
Remediate safely
- Minimize collection and output, apply field-level authorization and redaction at a centralized boundary, and return generic external errors.
- Remove secrets and sensitive data from logs, artifacts, URLs, caches, and client-side bundles; rotate credentials that may have been exposed.
- Update the affected component and add synthetic-data tests for response, error, observability, and export paths.
Authoritative sources
Complete CVE record and remediation plan
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