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CVE-2012-4930

Date: September 15, 2012

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.

Severity Score

Related Resources (12)

https://bugzilla.redhat.com/show_bug.cgi?id=857737
https://people.canonical.com/~ubuntu-security/cve/CVE-2012-4930
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html
http://www.theregister.co.uk/2012/09/14/crime_tls_attack/
https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls
https://nvd.nist.gov/vuln/detail/CVE-2012-4930
http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/
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://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html
http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091
https://www.mend.io/vulnerability-database/CVE-2012-4930

Severity Score

Weakness Type (CWE)

Cryptographic Issues

CWE-310

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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