Exim fixes a medium-severity vulnerability

Do you think this report is well-written? *

Yes

Do you use this technology? *

Yes

Was this report useful to you?

Yes

We would be happy if you would describe:

The security services provided by CESNET are designed to provide significant support in ensuring the cybersecurity of connected organizations. Although we strive to provide quality and reliable services, it is not possible to guarantee absolute coverage of all security vulnerabilities. Our services should be seen as a complement to an organization's own security management, not as a replacement. The client bears ultimate responsibility for securing their environment.

This report was translated by AI; nobody has reviewed the translation yet. Original language: Czech.

[TLP:CLEAR] Exim fixes a medium-severity vulnerability

Exim version 4.97.1 fixes a medium-severity vulnerability [1]. Debian has fixed this vulnerability for bullseye in version 4.94.2-7+deb11u3 and for bookworm in version 4.96-15+deb12u5 [2].

Exim - (CVE-2024-39929)

CVSS 5.4 (Medium)

Allows an unauthenticated remote attacker to bypass the $mime_filename extension-blocking protection mechanism and potentially deliver executable attachments to end users' mailboxes due to improper handling of a multiline filename in an RFC 2231 header [1].

The vulnerability is present in product:

Exim; <4.97.1

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

More information:

CVE-2024-39929 at cve.org, NVD
CWE-20 at cwe.mitre.org

The vulnerability was publicly disclosed 4. 7. 2024.

Links

By CESNET, z.s.p.o. Michaela Jarošová on 19. 7. 2024.

Report feedback

[TLP:CLEAR] Exim fixes a medium-severity vulnerability

Exim - (CVE-2024-39929)

CVSS 5.4 (Medium)

Links