#VU80410 Path traversal in A.K.I Software products - CVE-2023-40160

Vulnerability identifier: #VU80410

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-40160

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PMailServer Standard edition
Server applications / Other server solutions
PMailServer Pro edition
Server applications / Other server solutions
PMailServer Standard + IMAP4 edition
Server applications / Other server solutions
PMailServer Pro + IMAP4 edition
Server applications / Other server solutions
PMailServer2 Standard edition
Server applications / Other server solutions
PMailServer2 Pro edition
Server applications / Other server solutions
PMailServer2 Standard + IMAP4 edition
Server applications / Other server solutions
PMailServer2 Pro + IMAP4 edition
Server applications / Other server solutions
PMailServer2 Enterprise edition
Server applications / Other server solutions

Vendor: A.K.I Software

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in Mailing List Search CGI (pmmls.exe). A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Note: The following CGIs included with the vulnerable products are affected by the vulnerability.

• pmc.exe 2.5.1.720 and earlier
• pmam.exe 2.5.1.1411 and earlier
• pmmls.exe 2.5.1.561 and earlier
• pmum.exe (Standard edition) 2.5.1.25451 and earlier
• pmum.exe (Pro edition) 2.5.1.25452 and earlier
• pmum.exe (Standard + IMAP4 edition) 2.5.1.25453 and earlier
• pmum.exe (Pro + IMAP4 edition / Enterprise edition) 2.5.1.25454 and earlier
• pmman.exe (Standard edition) 2.5.1.12154 and earlier
• pmman.exe (Pro edition) 2.5.1.12155 and earlier
• pmman.exe (Standard + IMAP4 edition) 2.5.1.12156 and earlier
• pmman.exe (Pro + IMAP4 edition) 2.5.1.12157 and earlier
• pmman.exe (Enterprise edition) 2.5.1.12158 and earlier

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PMailServer Standard edition: 1.91

PMailServer Pro edition: 1.91

PMailServer Standard + IMAP4 edition: 1.91

PMailServer Pro + IMAP4 edition: 1.91

PMailServer2 Standard edition: before 2.51a

PMailServer2 Pro edition: before 2.51a

PMailServer2 Standard + IMAP4 edition: before 2.51a

PMailServer2 Pro + IMAP4 edition: before 2.51a

PMailServer2 Enterprise edition: before 2.51a

---

External links
https://jvn.jp/en/jp/JVN92720882/index.html
https://akisoftware.com/Vulnerability202301.html

---

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.