#VU85168 Path traversal in Beego - CVE-2022-31836

Vulnerability identifier: #VU85168

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-31836

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Beego
Web applications / Modules and components for CMS

Vendor: beego Framework

Description

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

The vulnerability exists due to leafInfo.match() function in Beego uses path.join() to deal with wildcardvalues which can lead to cross directory risk. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Beego: 1.0.1 - 2.0.3

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External links
https://github.com/beego/beego/issues/4961
https://github.com/advisories/GHSA-95f9-94vc-665h

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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.