Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2023-51766 |
CWE-ID | CWE-77 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system eximon4 (Ubuntu package) Operating systems & Components / Operating system package or component exim4-base (Ubuntu package) Operating systems & Components / Operating system package or component exim4 (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU84728
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-51766
CWE-ID:
CWE-77 - Command injection
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to spoof email messages.
The vulnerability exists due to an error when handling line endings other than <CR><LF>. A remote attacker can spoof contents of email message and bypass SPF protection mechanism. MitigationUpdate the affected package exim4 to the latest version.
Vulnerable software versionsUbuntu: 16.04 - 23.10
eximon4 (Ubuntu package): before Ubuntu Pro
exim4-base (Ubuntu package): before Ubuntu Pro
exim4 (Ubuntu package): before Ubuntu Pro
External linkshttp://ubuntu.com/security/notices/USN-6611-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.