CVE-2011-4354
Medium
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.
SeverityMedium
CVSS5.8
Exploit probability—
Product
Openssl
PublishedJan 27, 2012
First seenJan 27, 2012
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openssl openssl | v ≤ 0.9.8g, 0.9.1c, 0.9.2b, 0.9.3, 0.9.3a, 0.9.4, 0.9.5, 0.9.5a, 0.9.6, 0.9.6a, 0.9.6b, 0.9.6c, 0.9.6d, 0.9.6e, 0.9.6f, 0.9.6g, 0.9.6h, 0.9.6i, 0.9.6j, 0.9.6k, 0.9.6l, 0.9.6m, 0.9.7, 0.9.7a, 0.9.7b, 0.9.7c, 0.9.7d, 0.9.7e, 0.9.7f, 0.9.7g, 0.9.7h, 0.9.7i, 0.9.7j, 0.9.7k, 0.9.7l, 0.9.7m, 0.9.8, 0.9.8a, 0.9.8b, 0.9.8c, 0.9.8d, 0.9.8e, 0.9.8f | — |
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