#VU27504 Path traversal in ZZIPlib - CVE-2018-17828

Vulnerability identifier: #VU27504

Vulnerability risk: Medium

CVSSv4.0: 4.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-17828

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

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

Vendor: zziplib.sourceforge.net

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 ZZIPlib within the unzzip_cat() function in the bins/unzzipcat-mem.c. A remote attacker can pass specially crafted archive to the application and overwrite arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ZZIPlib: 0.13.69

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External links
https://github.com/gdraheim/zziplib/issues/62

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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.