Insufficient Verification of Data Authenticity Affecting exim-pgsql package, versions <0:4.92-1.40.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.33% (72nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN201803-EXIMPGSQL-6184622
  • published23 Jan 2024
  • disclosed24 Dec 2023

Introduced: 24 Dec 2023

CVE-2023-51766  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 exim-pgsql to version 0:4.92-1.40.amzn1 or higher.
This issue was patched in ALAS-2024-1908.

NVD Description

Note: Versions mentioned in the description apply only to the upstream exim-pgsql package and not the exim-pgsql package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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.

CVSS Scores

version 3.1