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fetchmail -- chosen plaintext attack against SSL CBC initialization vectors

Description

Matthias Andree reports: Fetchmail version 6.3.9 enabled "all SSL workarounds" (SSL_OP_ALL) which contains a switch to disable a countermeasure against certain attacks against block ciphers that permit guessing the initialization vectors, providing that an attacker can make the application (fetchmail) encrypt some data for him -- which is not easily the case. Stream ciphers (such as RC4) are unaffected. Credits to Apple Product Security for reporting this.


Affected Package


OS OS Version Package Name Package Version
FreeBSD any fetchmail 6.3.9
FreeBSD any fetchmail 6.3.22

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