CVE-2012-4930

LOW

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.

References

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

Details

Source: MITRE

Published: 2012-09-15

Updated: 2013-01-30

Type: CWE-310

Risk Information

CVSS v2.0

Base Score: 2.6

Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 4.9

Severity: LOW