CVE-2012-4929

Severity: low (CVSS 2.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-09-15 · updated 2026-06-16
Weakness: CWE-310

Description

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.

Affected products

Debian Linux: 7.0, 8.0
Google Chrome: all versions
Mozilla Firefox: all versions

References

http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/
http://code.google.com/p/chromium/issues/detail?id=139744
http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html
http://jvn.jp/en/jp/JVN65273415/index.html
http://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000129.html
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101366.html
http://lists.opensuse.org/opensuse-updates/2012-10/msg00096.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00034.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00048.html
http://marc.info/?l=bugtraq&m=136612293908376&w=2
http://news.ycombinator.com/item?id=4510829

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