Cryptographic Issues The advisory has been revoked - it doesn't affect any version of package nss (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1210-NSS-642262
- published15 Sept 2012
- disclosed15 Sept 2012
Introduced: 15 Sep 2012
CVE-2012-4929 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nss package and not the nss package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-4929
- http://support.apple.com/kb/HT5784
- http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
- http://code.google.com/p/chromium/issues/detail?id=139744
- http://www.debian.org/security/2012/dsa-2579
- http://www.debian.org/security/2013/dsa-2627
- http://www.debian.org/security/2015/dsa-3253
- https://security-tracker.debian.org/tracker/CVE-2012-4929
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101366.html
- http://marc.info/?l=bugtraq&m=136612293908376&w=2
- http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/
- http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html
- http://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000129.html
- http://jvn.jp/en/jp/JVN65273415/index.html
- http://news.ycombinator.com/item?id=4510829
- https://chromiumcodereview.appspot.com/10825183
- https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls
- http://security.stackexchange.com/questions/19911/crime-how-to-beat-the-beast-successor
- https://gist.github.com/3696912
- https://github.com/mpgn/CRIME-poc
- https://threatpost.com/en_us/blogs/demo-crime-tls-attack-091212
- http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312
- http://threatpost.com/en_us/blogs/new-attack-uses-ssltls-information-leak-hijack-https-sessions-090512
- 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/
- 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
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18920
- https://bugzilla.redhat.com/show_bug.cgi?id=857051
- http://rhn.redhat.com/errata/RHSA-2013-0587.html
- http://www.securityfocus.com/bid/55704
- http://www.ubuntu.com/usn/USN-1627-1
- http://www.ubuntu.com/usn/USN-1628-1
- http://www.ubuntu.com/usn/USN-1898-1