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.

CVSS v3.1

8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

CVSS v2.0

8.8 HIGHAV:N/AC:M/Au:N/C:N/I:C/A:C

EPSS

0.79% chance of exploitation in the next 30 days, 54th percentile

Published

2021-02-12

Updated

2024-08-03

Proof-of-concept exploits (1)

• vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt

References

• CVE Record
• NVD entry

Related

• CVE-2021-27184
• CVE-2021-27232
• CVE-2021-28143
• CVE-2022-43308
• CVE-2021-27190
• CVE-2021-27198