SB2021021606 - Multiple vulnerabilities in Pelco Digital Sentry Server

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper access control (CVE-ID: CVE-2021-27197)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the "AppendToTextFile" method in DSUtility.dll. A remote attacker can trick a victim to open a specially crafted webpage and write arbitrary files on the system.

2) Buffer overflow (CVE-ID: CVE-2021-27232)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the RTSPLive555.dll ActiveX control in SetCameraConnectionParameter. A remote attacker can trick a victim to visit a malicious website, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt
• https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-history
• https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server-RSTPLive555%20Activex%20Buffer%20overflow.txt