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OpenSSL CMS and S/MIME Bleichenbacher attack (CVE-2012-0884)

Severity CVSS Published Added Modified
5 (AV:N/AC:L/Au:N/C:P/I:N/A:N) March 11, 2012 March 22, 2012 January 10, 2018

Description

The implementation of Cryptographic Message Syntax (CMS) and PKCS #7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack (MMA) adaptive chosen ciphertext attack.

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References

Solution

http-openssl-0_9_8-upgrade-0_9_8_u

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