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 data without properly obfuscating the length of the unencrypted data, which allows man-in-the-middle attackers to…
Does this matter?
Lower severity and a low EPSS score (2.08%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 2.6 LOWAV:N/AC:H/Au:N/C:P/I:N/A:N
- EPSS
- 2.08% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- google/chrome · mozilla/firefox
- Source
- cve@mitre.org
References
- 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
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.