5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.006 Low
EPSS
Percentile
78.4%
The integrity check feature in OpenPGP, when handling a message that was
encrypted using cipher feedback (CFB) mode, allows remote attackers to
recover part of the plaintext via a chosen-ciphertext attack when the first
2 bytes of a message block are known, and an oracle or other mechanism is
available to determine whether an integrity check failed.