PT-2021-17316 · Pelco · Pelco Digital Sentry Server

Published 2021-02-12 · Updated 2021-02-19 · CVE-2021-27197

Positive Technologies (AI Summary)

CVSS v2.0

8.8

High

Base vector

AV:N/AC:M/Au:N/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Pelco Digital Sentry Server versions prior to 7.19.67

Description: The issue arises from the AppendToTextFile method in DSUtility.dll, which fails to verify whether it is being called from within the application or by a malicious user. This allows a remote attacker to craft an HTML page, potentially using "OBJECT classid=" and "

Recommendations: For versions prior to 7.19.67, update to version 7.19.67 or later to resolve the issue. As a temporary workaround, consider restricting access to the AppendToTextFile method until a patch is applied.

Exploit

Fix

Origin Validation Error

Weakness Enumeration

CWE-346

Related Identifiers

CVE-2021-27197

Affected Products

Pelco Digital Sentry Server

References · 5

• 🔥 https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-27197 · Security Note
• https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-history · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-27197 · Vendor Advisory
• https://t.me/cibsecurity/23541 · Telegram Post