National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-4930 Detail

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.

Source:  MITRE
Description Last Modified:  09/15/2012

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 2.6 LOW
Vector: (AV:N/AC:H/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 4.9


Access Vector (AV): Network
Access Complexity (AC): High
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2012-4930
NVD Published Date:
09/15/2012
NVD Last Modified:
01/29/2013