#VU68860 Path traversal in Tzinfo - CVE-2022-31163 

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Main Vulnerability Database Vulnerabilities #VU68860

#VU68860 Path traversal in Tzinfo - CVE-2022-31163

Published: October 31, 2022


Vulnerability identifier: #VU68860
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2022-31163
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Tzinfo
Software vendor:
Tzinfo Project

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing a new line character in the TZInfo::Timezone.get. With Ruby version 1.9.3 and later, TZInfo::Timezone.get can be made to load unintended files with require, executing them within the Ruby process. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system.

Exploitation example:

TZInfo::Timezone.get("foo\n/../../../../../../../../../../../../../../../../tmp/payload")


Remediation

Install update from vendor's website.

External links