#VU38366 Path traversal in UnRar - CVE-2017-14120

Vulnerability identifier: #VU38366

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-14120

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
UnRar
Client/Desktop applications / Software for archiving

Vendor: RARLAB

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a directory traversal vulnerability for RAR v2 archives: pathnames of the form ../[filename] are unpacked into the upper directory.

Mitigation
Install update from vendor's website.

Vulnerable software versions

UnRar: 0.0.1

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External links
https://www.openwall.com/lists/oss-security/2017/08/20/1
https://bugs.debian.org/874059

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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.