CVE-2012-4930
The SPDY protocol 3 and earlier, as used in Mozilla Firefox, Google Chrome, and other products, can perform TLS encryption of compressed…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Timeline
ID reserved
By mitre
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.6 | AV:N/AC:H/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.1% · top 18% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Weakness
Affected products
n/a
- affected n/a
References (9)
- http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091 (opens in a new tab)x_refsource_MISCx_transferred
- http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312 (opens in a new tab)x_refsource_MISCx_transferred
- http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html (opens in a new tab)x_refsource_MISCx_transferred
- https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls (opens in a new tab)x_refsource_MISCx_transferred
- http://www.theregister.co.uk/2012/09/14/crime_tls_attack/ (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=857737 (opens in a new tab)x_refsource_MISCx_transferred
- http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/ (opens in a new tab)x_refsource_MISCx_transferred
- SUSE-SU-2012:1351 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://www.ekoparty.org/2012/thai-duong.php (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-4930)Record last updated .