Path traversal in IBM WebSphere Application Server

1) Path traversal

EUVDB-ID: #VU15918

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1797

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 conduct directory traversal attack.

The vulnerability exists due to improper validation of user-supplied input on systems that have an Enterprise Bundle Archive (EBA) installed and with a path external to the EBA. A remote attacker can trick the victim into extracting a specially crafted ZIP archive containing 'dot dot slash' sequences that, when executed, will write arbitrary files on the target system.

Note: This vulnerability is known as "Zip-Slip".

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM WebSphere Application Server: 7.0 - 9.0.0.9

External links

http://www-01.ibm.com/support/docview.wss?uid=ibm10730699

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.