CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
EPSS
Percentile
78.8%
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.