Vulnerability identifier: #VU13922

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mutt
Client/Desktop applications / Office applications

Vendor: Mutt.org

Description

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

The vulnerability exists due to a boundary error in imap/command.c file when verifying IMAP mailbox status. A remote attacker that controls the IMAP server can send an overly long response to the vulnerable mail client, trigger buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that victim connects to a compromised server or the attacker is able to perform MitM (man-in-the-middle) attack.

Mitigation
Update to version 1.10.1.

Vulnerable software versions

Mutt: 0.95.6 - 1.10.0

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External links
http://gitlab.com/muttmua/mutt/commit/ed9d7727dc705754871e31cb41420f0ea956495b

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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.