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Last updated: 5/24/2016 3:39:38 AM

CVE Publication rate: 19

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Vulnerability Workload Index: 11.53
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National Cyber Awareness System

Vulnerability Summary for CVE-2012-4929

Original release date: 09/15/2012
Last revised: 09/01/2015


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 2.6 LOW
Impact Subscore: 2.9
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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External Source: MISC
Name: https://gist.github.com/3696912
External Source: MISC
Name: http://www.ekoparty.org/2012/thai-duong.php
External Source: SUSE
Name: openSUSE-SU-2012:1420
External Source: APPLE
Name: APPLE-SA-2013-06-04-1
External Source: BID
Name: 55704
External Source: UBUNTU
Name: USN-1627-1
External Source: MISC
Name: http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312
External Source: DEBIAN
Name: DSA-2627
External Source: SUSE
Name: openSUSE-SU-2013:0157
External Source: CONFIRM
Name: http://support.apple.com/kb/HT5784
External Source: CONFIRM
Name: http://code.google.com/p/chromium/issues/detail?id=139744
External Source: FEDORA
Name: FEDORA-2013-4403
External Source: UBUNTU
Name: USN-1898-1
External Source: MISC
Name: https://threatpost.com/en_us/blogs/demo-crime-tls-attack-091212
External Source: SUSE
Name: openSUSE-SU-2013:0143
External Source: OVAL
Name: oval:org.mitre.oval:def:18920
External Source: MISC
Name: http://www.theregister.co.uk/2012/09/14/crime_tls_attack/
External Source: MISC
Name: http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/
External Source: MISC
Name: http://news.ycombinator.com/item?id=4510829
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=857051
External Source: MISC
Name: http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html
External Source: MISC
Name: https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls
External Source: MISC
Name: http://security.stackexchange.com/questions/19911/crime-how-to-beat-the-beast-successor
External Source: DEBIAN
Name: DSA-3253
External Source: DEBIAN
Name: DSA-2579
External Source: MISC
Name: http://threatpost.com/en_us/blogs/new-attack-uses-ssltls-information-leak-hijack-https-sessions-090512
External Source: REDHAT
Name: RHSA-2013:0587
External Source: CONFIRM
Name: https://chromiumcodereview.appspot.com/10825183
External Source: UBUNTU
Name: USN-1628-1
External Source: MISC
Name: http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091

Vulnerable software and versions

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+ Configuration 2
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