CVE-2024-39929
exim4 - security update
5.4
MEDIUM
CVSS 3.1
EPSS 60.3%
Description
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.
How to fix CVE-2024-39929
To remediate CVE-2024-39929, upgrade the affected package to a fixed version below.
- Debian/exim4—upgrade to 4.94.2-7+deb11u3 or later
- —upgrade to 4.94.2-7+deb11u3 or later
Is CVE-2024-39929 being exploited?
Likely — EPSS is 60.3%, placing CVE-2024-39929 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (2)
- from 0, < 4.94.2-7+deb11u3
- from 0, < 4.94.2-7+deb11u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |