Vulnerability in Pelco Digital Sentry Server
CVE-2021-27197
DSUtility.dll in Pelco Digital Sentry Server before 7.19.67 has an arbitrary file write vulnerability. The AppendToTextFile method doesn't check if it's being called from the application or from a malicious user. The vulnerability is triggered when a remote attacker crafts an HTML page (e.g., with "OBJECT classid=" and "<SCRIPT language='vbscript'>") to overwrite arbitrary files.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
References
- support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revisio… (Release Notes, Vendor Advisory)
- github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27197?
- CVE-2021-27197 is a high-severity vulnerability in Pelco Digital Sentry Server, classified under Origin Validation Error. CVSS score: 8.1/10. Published 2021-02-12.
- How severe is CVE-2021-27197?
- High severity. CVSS v3 base score is 8.1 out of 10.