#VU34207 Deserialization of Untrusted Data in SquirrelMail - CVE-2020-14932

Vulnerability identifier: #VU34207

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2020-14932

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SquirrelMail
Web applications / Webmail solutions

Vendor: SquirrelMail Development Team

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

compose.php in SquirrelMail 1.4.22 calls unserialize for the $mailtodata value, which originates from an HTTP GET request. This is related to mailto.php.

Mitigation
Install update from vendor's website.

Vulnerable software versions

SquirrelMail: 1.4.22

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External links
https://www.openwall.com/lists/oss-security/2020/06/20/1

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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.