The TLS protocol 1.2 and earlier, as used in Mozilla Firefox, Google Chrome, Qt, and…
Priority LOW 20CWE-310Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- Partial Red Hat: 11 fixed, 3 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.04346 91st percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 11 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* | all versions | Vulnerable | |
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | all versions | Vulnerable | Mozilla |
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Google
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Mozilla
Remediation
Red Hat 3 advisories
- RHSA-2014:0416 Released 2014-04-17 · Red Hat rating Importantrhevm-spice-client security update
- RHEV-M 3.3 rhevm-spice-client-3.3-12.el6_5, rhevm-spice-client-x64-cab-3.3-12.el6_5, rhevm-spice-client-x64-msi-3.3-12.el6_5 +2
- RHSA-2013:0636 Released 2013-03-13 · Red Hat rating Importantrhev-hypervisor6 security and bug fix update
- RHEV Hypervisor for RHEL-6 rhev-hypervisor6-6.4-20130306.2.el6_4
- RHSA-2013:0587 Released 2013-03-04 · Red Hat rating Moderateopenssl security update
- Red Hat Enterprise Linux (v. 5 server) openssl-0.9.8e-26.el5_9.1, openssl-0.9.8e-26.el5_9.1.i386, openssl-0.9.8e-26.el5_9.1.ia64 +9
- Red Hat Enterprise Linux Desktop (v. 6) openssl-1.0.0-27.el6_4.2
- Red Hat Enterprise Linux Desktop Optional (v. 6) openssl-1.0.0-27.el6_4.2, openssl-devel-1.0.0-27.el6_4.2, openssl-perl-1.0.0-27.el6_4.2 +1
- Red Hat Enterprise Linux HPC Node (v. 6) openssl-1.0.0-27.el6_4.2
- Red Hat Enterprise Linux HPC Node Optional (v. 6) openssl-1.0.0-27.el6_4.2, openssl-devel-1.0.0-27.el6_4.2, openssl-perl-1.0.0-27.el6_4.2 +1
- Red Hat Enterprise Linux Server (v. 6) openssl-1.0.0-27.el6_4.2, openssl-1.0.0-27.el6_4.2.ppc, openssl-devel-1.0.0-27.el6_4.2 +1
- Red Hat Enterprise Linux Server Optional (v. 6) openssl-1.0.0-27.el6_4.2, openssl-perl-1.0.0-27.el6_4.2, openssl-static-1.0.0-27.el6_4.2
- Red Hat Enterprise Linux Workstation (v. 6) openssl-1.0.0-27.el6_4.2, openssl-devel-1.0.0-27.el6_4.2
- Red Hat Enterprise Linux Workstation Optional (v. 6) openssl-1.0.0-27.el6_4.2, openssl-perl-1.0.0-27.el6_4.2, openssl-static-1.0.0-27.el6_4.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 4 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| RHEV Hypervisor for RHEL-6 | Fixed | RHSA-2013:0636 |
| RHEV-M 3.3 | Fixed | RHSA-2014:0416 |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2013:0587 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2013:0587 |
Not affected: 6 products
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Enterprise Web Server 1
- Red Hat JBoss Enterprise Web Server 2
Timeline
- 2026-10-02 Threatist record created from CVE-2012-4929
- 2026-10-03 Alias added: GHSA-348j-44v2-vwfr
References
Advisory 15
Other 18
- https://gist.github.com/3696912
- http://www.iacr.org/cryptodb/data/paper.php?pubkey=3091
- https://chromiumcodereview.appspot.com/10825183
- http://threatpost.com/en_us/blogs/crime-attack-uses-compression-ratio-tls-requests-side-channel-hijack-secure-sessions-091312
- http://isecpartners.com/blog/2012/9/14/details-on-the-crime-attack.html
- https://community.qualys.com/blogs/securitylabs/2012/09/14/crime-information-leakage-attack-against-ssltls
- https://github.com/mpgn/CRIME-poc
- http://news.ycombinator.com/item?id=4510829
- http://support.apple.com/kb/HT5784
- http://www.theregister.co.uk/2012/09/14/crime_tls_attack/
- http://code.google.com/p/chromium/issues/detail?id=139744
- oval:org.mitre.oval:def:18920
- http://arstechnica.com/security/2012/09/crime-hijacks-https-sessions/
- https://threatpost.com/en_us/blogs/demo-crime-tls-attack-091212
- 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://security.stackexchange.com/questions/19911/crime-how-to-beat-the-beast-successor
- https://bugzilla.redhat.com/show_bug.cgi?id=857051
Sources
- CVE-2012-4929 · CVE Program
- CVE-2012-4929 · NVD
- FIRST EPSS
- GHSA-348j-44v2-vwfr · GitHub Advisory Database · CC BY 4.0
- CVE-2012-4929 · Red Hat security data · CC BY 4.0
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