CVE-2020-28021
Public on 2021-05-06
Modified on 2021-05-07
Description
Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool file (which indirectly leads to remote code execution as root) via AUTH= in a MAIL FROM command.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | exim | 2021-05-06 | ALAS-2021-1497 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv2 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
| Amazon Linux | CVSSv3 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv2 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
| NVD | CVSSv3 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |