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| OpenSSL protection level downgrade | | Published: |  | 09.12.2010 | | Source: |  | BUGTRAQ | | SecurityVulns ID: |  | 11284 | | Type: |  | library | | Level: |  | 6/10 | | Description: |  | Attacker can downgrade cipher level for subsequent connections. |
| Affected: |  | OPENSSL : OpenSSL 0.9 | | CVE: |  | CVE-2010-4252 (OpenSSL before 1.0.0c, when J-PAKE is enabled, does not properly validate the public parameters in the J-PAKE protocol, which allows remote attackers to bypass the need for knowledge of the shared secret, and successfully authenticate, by sending crafted values in each round of the protocol.) | | | | CVE-2010-4180 (OpenSSL before 0.9.8q, and 1.0.x before 1.0.0c, when SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG is enabled, does not properly prevent modification of the ciphersuite in the session cache, which allows remote attackers to force the downgrade to an unintended cipher via vectors involving sniffing network traffic to discover a session identifier.) | | | | CVE-2008-7270 (OpenSSL before 0.9.8j, when SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG is enabled, does not prevent modification of the ciphersuite in the session cache, which allows remote attackers to force the use of a disabled cipher via vectors involving sniffing network traffic to discover a session identifier, a different vulnerability than CVE-2010-4180.) |
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