1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200510-11 / OpenSSL |
| Release Date | October 12, 2005 |
| Latest Revision | November 07, 2005: 02 |
| Impact | low |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| dev-libs/openssl | < 0.9.7h | >= 0.9.7h, revision >= 0.9.7g-r1, revision >= 0.9.7e-r2 | All supported architectures |
Related bugreports: #108852
When using a specific option, OpenSSL can be forced to fallback to the less secure SSL 2.0 protocol.
OpenSSL is a toolkit implementing the Secure Sockets Layer, Transport Layer Security protocols and a general-purpose cryptography library.
Applications setting the SSL_OP_MSIE_SSLV2_RSA_PADDING option (or the SSL_OP_ALL option, that implies it) can be forced by a third-party to fallback to the less secure SSL 2.0 protocol, even if both parties support the more secure SSL 3.0 or TLS 1.0 protocols.
A man-in-the-middle attacker can weaken the encryption used to communicate between two parties, potentially revealing sensitive information.
If possible, disable the use of SSL 2.0 in all OpenSSL-enabled applications.
All OpenSSL users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose dev-libs/openssl |