CVE-2011-4354

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Summary

CVECVE-2011-4354
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-01-27 00:55:01 UTC
Updated2026-04-29 01:13:23 UTC
Descriptioncrypto/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.

Risk And Classification

Primary CVSS: v2.0 5.8 from [email protected]

AV:N/AC:M/Au:N/C:P/I:P/A:N

Problem Types: CWE-310 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openssl Openssl 0.9.1c All All All
Application Openssl Openssl 0.9.2b All All All
Application Openssl Openssl 0.9.3 All All All
Application Openssl Openssl 0.9.3a All All All
Application Openssl Openssl 0.9.4 All All All
Application Openssl Openssl 0.9.5 All All All
Application Openssl Openssl 0.9.5 beta1 All All
Application Openssl Openssl 0.9.5 beta2 All All
Application Openssl Openssl 0.9.5a All All All
Application Openssl Openssl 0.9.5a beta1 All All
Application Openssl Openssl 0.9.5a beta2 All All
Application Openssl Openssl 0.9.6 All All All
Application Openssl Openssl 0.9.6 beta1 All All
Application Openssl Openssl 0.9.6 beta2 All All
Application Openssl Openssl 0.9.6 beta3 All All
Application Openssl Openssl 0.9.6a All All All
Application Openssl Openssl 0.9.6a beta1 All All
Application Openssl Openssl 0.9.6a beta2 All All
Application Openssl Openssl 0.9.6a beta3 All All
Application Openssl Openssl 0.9.6b All All All
Application Openssl Openssl 0.9.6c All All All
Application Openssl Openssl 0.9.6d All All All
Application Openssl Openssl 0.9.6e All All All
Application Openssl Openssl 0.9.6f All All All
Application Openssl Openssl 0.9.6g All All All
Application Openssl Openssl 0.9.6h All All All
Application Openssl Openssl 0.9.6i All All All
Application Openssl Openssl 0.9.6j All All All
Application Openssl Openssl 0.9.6k All All All
Application Openssl Openssl 0.9.6l All All All
Application Openssl Openssl 0.9.6m All All All
Application Openssl Openssl 0.9.7 All All All
Application Openssl Openssl 0.9.7 beta1 All All
Application Openssl Openssl 0.9.7 beta2 All All
Application Openssl Openssl 0.9.7 beta3 All All
Application Openssl Openssl 0.9.7 beta4 All All
Application Openssl Openssl 0.9.7 beta5 All All
Application Openssl Openssl 0.9.7 beta6 All All
Application Openssl Openssl 0.9.7a All All All
Application Openssl Openssl 0.9.7b All All All
Application Openssl Openssl 0.9.7c All All All
Application Openssl Openssl 0.9.7d All All All
Application Openssl Openssl 0.9.7e All All All
Application Openssl Openssl 0.9.7f All All All
Application Openssl Openssl 0.9.7g All All All
Application Openssl Openssl 0.9.7h All All All
Application Openssl Openssl 0.9.7i All All All
Application Openssl Openssl 0.9.7j All All All
Application Openssl Openssl 0.9.7k All All All
Application Openssl Openssl 0.9.7l All All All
Application Openssl Openssl 0.9.7m All All All
Application Openssl Openssl 0.9.8 All All All
Application Openssl Openssl 0.9.8a All All All
Application Openssl Openssl 0.9.8b All All All
Application Openssl Openssl 0.9.8c All All All
Application Openssl Openssl 0.9.8d All All All
Application Openssl Openssl 0.9.8e All All All
Application Openssl Openssl 0.9.8f All All All
Application Openssl Openssl All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - CVE-2011-4354 OpenSSL 0.9.8g (32-bit builds) bug leaks ECC private keys af854a3a-2127-422b-91ae-364da2661108 openwall.com
#1593: BN_nist_mod_384 gives wrong answers af854a3a-2127-422b-91ae-364da2661108 rt.openssl.org
'[openssl.org #1593] BN_nist_mod_384 gives wrong answers' thread - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info
Debian -- Security Information -- DSA-2390-1 openssl af854a3a-2127-422b-91ae-364da2661108 www.debian.org
757909 – (CVE-2011-4354) CVE-2011-4354 openssl: ECC private leak (disclosure of TLS server's private key) af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
crypto.di.uminho.pt/CACE/CT-RSA2012-openssl-src.zip af854a3a-2127-422b-91ae-364da2661108 crypto.di.uminho.pt
cvs.openssl.org/filediff af854a3a-2127-422b-91ae-364da2661108 cvs.openssl.org
Cryptology ePrint Archive: Report 2011/633 af854a3a-2127-422b-91ae-364da2661108 eprint.iacr.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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