CVE-2024-39929 Affecting exim4 package, versions <4.95-4ubuntu2.6


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-UBUNTU2204-EXIM4-7425682
  • published1 Aug 2024
  • disclosed4 Jul 2024

Introduced: 4 Jul 2024

CVE-2024-39929  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 exim4 to version 4.95-4ubuntu2.6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.