CVE-2012-4929: Debian Linux

Low severity, CVSS 2.6. EPSS: 4.3% chance of exploitation in the next 30 days.

The TLS protocol 1.2 and earlier, as used in Mozilla Firefox, Google Chrome, Qt, and other products, can encrypt compressed data without properly obfuscating the length of the unencrypted data, which allows man-in-the-middle attackers to obtain plaintext HTTP headers by observing length differences during a series of guesses in which a string in an HTTP request potentially matches an unknown string in an HTTP header, aka a "CRIME" attack.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Google Chrome: any version
• Mozilla Firefox: any version

Published 2012-09-15. Last modified 2026-06-16.