CVE-2020-28021

High

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.

SeverityHigh
CVSS8.8
Exploit probability—
ProductExim
PublishedMay 6, 2021
First seenMay 6, 2021

How to fix

Update
  • exim exim4.94.2 or later

Affected products

ProductAffected versionsFixed in
exim exim4.00 ≤ v < 4.94.24.94.2

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