CVE-2012-4930 Information

Description

The SPDY protocol 3 and earlier as used in Mozilla Firefox Google Chrome and other products can perform TLS encryption of 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.

Reference

http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/ http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312 http://www.ekoparty.org/2012/thai-duong.php http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091 http://www.theregister.co.uk/2012/09/14/crime_tls_attack/ https://bugzilla.redhat.com/show_bug.cgi?id=857737 https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls