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Ubuntu: USN-4934-1 (CVE-2020-28021): Exim vulnerabilities

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Ubuntu: USN-4934-1 (CVE-2020-28021): Exim vulnerabilities

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
05/04/2021
Created
05/07/2021
Added
05/05/2021
Modified
06/01/2021

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.

Solution(s)

  • ubuntu-upgrade-exim4-base
  • ubuntu-upgrade-exim4-daemon-heavy
  • ubuntu-upgrade-exim4-daemon-light

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