Access Restriction Bypass Affecting sendmail package, versions [,8.17)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.24% (47th percentile)

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  • Snyk IDSNYK-UNMANAGED-SENDMAIL-2432811
  • published24 Mar 2022
  • disclosed24 Mar 2022
  • creditUnknown

Introduced: 24 Mar 2022

CVE-2021-3618  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade sendmail to version 8.17 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass by allowing a MiTM attacker having access to victim's traffic at the TCP/IP layer to redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

CVSS Base Scores

version 3.1