CVE-2011-4354
Description
crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.9.8o-4squeeze3 |
| sid | Fixed | 0.9.8o-4squeeze3 |
| forky | Fixed | 0.9.8o-4squeeze3 |
| bullseye | Fixed | 0.9.8o-4squeeze3 |
| bookworm | Fixed | 0.9.8o-4squeeze3 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openssl | openssl | {"endIncluding":"0.9.8g"} | |
| openssl | openssl | 0.9.1c | |
| openssl | openssl | 0.9.2b | |
| openssl | openssl | 0.9.3 | |
| openssl | openssl | 0.9.3a | |
| openssl | openssl | 0.9.4 | |
| openssl | openssl | 0.9.5 | |
| openssl | openssl | 0.9.5a | |
| openssl | openssl | 0.9.6 | |
| openssl | openssl | 0.9.6a | |
| openssl | openssl | 0.9.6b | |
| openssl | openssl | 0.9.6c | |
| openssl | openssl | 0.9.6d | |
| openssl | openssl | 0.9.6e | |
| openssl | openssl | 0.9.6f | |
| openssl | openssl | 0.9.6g | |
| openssl | openssl | 0.9.6h | |
| openssl | openssl | 0.9.6i | |
| openssl | openssl | 0.9.6j | |
| openssl | openssl | 0.9.6k | |
| openssl | openssl | 0.9.6l | |
| openssl | openssl | 0.9.6m | |
| openssl | openssl | 0.9.7 | |
| openssl | openssl | 0.9.7a | |
| openssl | openssl | 0.9.7b | |
| openssl | openssl | 0.9.7c | |
| openssl | openssl | 0.9.7d | |
| openssl | openssl | 0.9.7e | |
| openssl | openssl | 0.9.7f | |
| openssl | openssl | 0.9.7g | |
| openssl | openssl | 0.9.7h | |
| openssl | openssl | 0.9.7i | |
| openssl | openssl | 0.9.7j | |
| openssl | openssl | 0.9.7k | |
| openssl | openssl | 0.9.7l | |
| openssl | openssl | 0.9.7m | |
| openssl | openssl | 0.9.8 | |
| openssl | openssl | 0.9.8a | |
| openssl | openssl | 0.9.8b | |
| openssl | openssl | 0.9.8c | |
| openssl | openssl | 0.9.8d | |
| openssl | openssl | 0.9.8e | |
| openssl | openssl | 0.9.8f | |
References
- http://crypto.di.uminho.pt/CACE/CT-RSA2012-openssl-src.zip
- http://cvs.openssl.org/filediff?f=openssl/crypto/bn/bn_nist.c&v1=1.14&v2=1.21
- http://eprint.iacr.org/2011/633
- http://marc.info/?t=119271238800004
- http://openwall.com/lists/oss-security/2011/12/01/6
- http://rt.openssl.org/Ticket/Display.html?id=1593&user=guest&pass=guest
- http://www.debian.org/security/2012/dsa-2390
- https://bugzilla.redhat.com/show_bug.cgi?id=757909
- https://security-tracker.debian.org/tracker/CVE-2011-4354
CWEs
CWE-310
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.