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Amazon Linux AMI: CVE-2023-51766: Security patch for exim (ALAS-2024-1908)

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Amazon Linux AMI: CVE-2023-51766: Security patch for exim (ALAS-2024-1908)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
12/24/2023
Created
01/26/2024
Added
01/24/2024
Modified
02/05/2024

Description

Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not.

Solution(s)

  • amazon-linux-upgrade-exim

References

  • ALAS-2024-1908
  • CVE-2023-51766

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