#VU11823 Command injection in Heirloom mailx and BSD mailx - CVE-2014-7844

Vulnerability identifier: #VU11823

Vulnerability risk: Low

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-7844

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Heirloom mailx
Web applications / Webmail solutions
BSD mailx
Web applications / Webmail solutions

Vendor: Heirloom Project
FreeBSD Foundation

Description
The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The weakness exists due to improper handling of the parsing of email addresses. A remote attacker can execute arbitrary commands through the direct command execution functionality.

Mitigation
Update BSD mailx to version 8.1.2.20160123.

Vulnerable software versions

Heirloom mailx: 12.0 - 12.5

BSD mailx: 8.1.2

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External links
https://seclists.org/oss-sec/2014/q4/1066

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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.