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STVS ProVision 5.9.10 (archive.rb) Authenticated File Disclosure Vulnerability

Medium

Advisory ID

ZSL-2021-5623

Release Date

26 January 2021

Vendor

STVS SA - http://www.stvs.ch

Affected Version

5.9.10 (build 2885-3a8219a), 5.9.9 (build 2882-7c3b787), 5.9.7 (build 2871-a450938), 5.9.1 (build 2771-1bbed11), 5.9.0 (build 2701-6123026), 5.8.6 (build 2557-84726f7), 5.7, 5.6, 5.5

CVE

N/A

Tested On

Ubuntu 14.04.3, nginx/1.12.1, nginx/1.4.6, nginx/1.1.19, nginx/0.7.65, nginx/0.3.61

Summary

STVS is a Swiss company specializing in development of software for digital video recording for surveillance cameras as well as the establishment of powerful and user-friendly IP video surveillance networks.

Description

The NVR software ProVision suffers from an authenticated arbitrary file disclosure vulnerability. Input passed through the files parameter in archive download script (archive.rb) is not properly verified before being used to download files. This can be exploited to disclose the contents of arbitrary and sensitive files.

Proof of Concept

provision_lfi.txtTXT

Disclosure Timeline

19.01.2021Vulnerability discovered.

19.01.2021Vendor contacted.

25.01.2021No response from the vendor.

26.01.2021Public security advisory released.

Credits

Vulnerability discovered by Gjoko Krstic

References

[1]https://www.exploit-db.com/exploits/49481

[2]https://packetstormsecurity.com/files/161157

[3]https://cxsecurity.com/issue/WLB-2021010190

[4]https://exchange.xforce.ibmcloud.com/vulnerabilities/195721

Changelog

26.01.2021Initial release

31.01.2021Added reference [1], [2], [3] and [4]