Path traversal in MPXJ

1) Path traversal

EUVDB-ID: #VU83226

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 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:joniles:mpxj:8.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:joniles:mpxj:8.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:joniles:mpxj:8.3.2:*:*:*:*:*:*:*

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

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.