VULNERABILITY INTELLIGENCE

CVE-2013-3587

CVSS score5.9 MEDIUM
EPSS probability4.35%
CISA KEVNot currently listed
Published2020-02-21
Last modified2026-06-16

Description

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.