CVE-2011-4354
The MITRE CVE dictionary describes this issue as:
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.
Find out more about CVE-2011-4354 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 3, 4, 5, or 6 as they did not include support for the ECDH or ECDHE ciphers.
CVSS v2 metrics
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 4 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:N |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | openssl | Not affected |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected |
| Red Hat Enterprise Linux 5 | openssl | Not affected |
| Red Hat Enterprise Linux 5 | openssl097a | Not affected |
| Red Hat Enterprise Linux 4 | openssl | Not affected |
| Red Hat Enterprise Linux 4 | openssl096b | Not affected |
| Red Hat Enterprise Linux 3 | openssl | Not affected |
CVE description copyright © 2017, The MITRE Corporation