#VU83226 Path traversal in MPXJ - CVE-2020-35460

Vulnerability identifier: #VU83226

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-35460

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MPXJ
Universal components / Libraries / Libraries used by multiple products

Vendor: Jon Iles

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 the zip stream handler flow within common/InputStreamHelper.java. A remote attacker can send a specially crafted HTTP request and writr arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MPXJ: 8.3.0 - 8.3.4

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External links
https://github.com/joniles/mpxj/commit/8eaf4225048ea5ba7e59ef4556dab2098fcc4a1d
https://www.mpxj.org/changes-report.html#a8.3.5
https://www.oracle.com/security-alerts/cpujan2021.html

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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.