Ubuntu update for exim4

1) Use-after-free

EUVDB-ID: #VU106059

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-30232

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the handling of the dp command line parameter. A local user with command-line access can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package exim4 to the latest version.

Vulnerable software versions

Ubuntu: 24.04 - 24.10

eximon4 (Ubuntu package): before 4.97-4ubuntu4.3

exim4-base (Ubuntu package): before 4.97-4ubuntu4.3

exim4 (Ubuntu package): before 4.97-4ubuntu4.3

CPE2.3

• cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:eximon4_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:exim4-base_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:exim4_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-7373-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.