Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | exim | 2022-07-28 20:35 | ALAS-2022-1622 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv2 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Amazon Linux | CVSSv3 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
NVD | CVSSv2 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
NVD | CVSSv3 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |