National Cyber Awareness System

Vulnerability Summary for CVE-2012-4930

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MISC

Name: https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls

Hyperlink:https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls

External Source: MISC

Name: https://bugzilla.redhat.com/show_bug.cgi?id=857737

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=857737

External Source: MISC

Name: http://www.theregister.co.uk/2012/09/14/crime_tls_attack/

Hyperlink:http://www.theregister.co.uk/2012/09/14/crime_tls_attack/

External Source: MISC

Name: http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091

Hyperlink:http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091

External Source: MISC

Name: http://www.ekoparty.org/2012/thai-duong.php

Hyperlink:http://www.ekoparty.org/2012/thai-duong.php

External Source: MISC

Name: http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312

Hyperlink:http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312

External Source: SUSE

Name: SUSE-SU-2012:1351

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html

External Source: MISC

Name: http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html

Hyperlink:http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html

External Source: MISC

Name: http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/

Hyperlink:http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/