Insufficient Verification of Data Authenticity Affecting rmail package, versions <8.15.2-150000.8.12.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.35% (72nd percentile)

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  • Snyk IDSNYK-SLES155-RMAIL-6371502
  • published5 Mar 2024
  • disclosed1 Mar 2024

Introduced: 1 Mar 2024

CVE-2023-51765  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 rmail to version 8.15.2-150000.8.12.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rmail package and not the rmail package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

sendmail through 8.17.2 allows SMTP smuggling in certain 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 sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with 'o' in srv_features.

CVSS Scores

version 3.1