#VU48809 Path traversal in go-slug - CVE-2020-29529

Vulnerability identifier: #VU48809

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-2020-29529

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
go-slug
Web applications / Modules and components for CMS

Vendor: HashiCorp

Description

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

The vulnerability exists due to input validation error when handling files and symlinks in Unpack function. 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

go-slug: 0.1.0 - 0.4.3

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External links
https://github.com/hashicorp/go-slug/compare/v0.4.3...v0.5.0
https://github.com/hashicorp/go-slug/releases/tag/v0.5.0

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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.