Path traversal in Info-ZIP UnZip

1) Path traversal

EUVDB-ID: #VU95338

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2001-1268

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A local user can send a specially crafted HTTP request and to overwrite arbitrary files during archive extraction via a . (dot dot) in an extracted filename.

Mitigation

Install update from vendor's website.

Vulnerable software versions

UnZip: 5.2 - 5.42

CPE2.3

• cpe:2.3:a:info-zip:unzip:5.2:*:*:*:*:*:*:*
• cpe:2.3:a:info-zip:unzip:5.3:*:*:*:*:*:*:*
• cpe:2.3:a:info-zip:unzip:5.31:*:*:*:*:*:*:*

External links

https://online.securityfocus.com/archive/1/196445
https://sunsolve.sun.com/search/document.do?assetkey=1-26-47800-1
https://sunsolve.sun.com/search/document.do?assetkey=1-77-1000928.1-1
https://www.info-zip.org/pub/infozip/UnZip.html

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.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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