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CVE-2012-4930 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/	CVE
http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html	CVE
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html	CVE
https://bugzilla.redhat.com/show_bug.cgi?id=857737	CVE
https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls	CVE
http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312	CVE
http://www.ekoparty.org/2012/thai-duong.php	CVE
http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091	CVE
http://www.theregister.co.uk/2012/09/14/crime_tls_attack/	CVE
http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/	[email protected]
http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html	[email protected]
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=857737	[email protected]
https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls	[email protected]
http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312	[email protected]
http://www.ekoparty.org/2012/thai-duong.php	[email protected]
http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091	[email protected]
http://www.theregister.co.uk/2012/09/14/crime_tls_attack/	[email protected]

see all 18 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-310	Cryptographic Issues	[email protected]

Affected Products

Product	Versions
google chrome	All versions
CPE cpe:2.3:a:google:chrome:::::::: Remediation No remediation found in references.
mozilla firefox	All versions
CPE cpe:2.3:a:mozilla:firefox:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 29, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Sep 17, 2012	Initial Analysis	[email protected]