PT-2018-5398 · Kaseya · Kaseya Virtual System Administrator

Published 2018-03-26 · Updated 2018-10-09 · CVE-2017-12410

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Kaseya Virtual System Administrator versions 9.3.0.11 and earlier

Description: The issue is related to a Time of Check & Time of Use (TOCTOU) vulnerability. This vulnerability can be exploited by winning a race condition when the Kaseya Virtual System Administrator agent tries to execute its binaries from working and/or temporary folders. Successful exploitation results in the execution of arbitrary programs with "NT AUTHORITYSYSTEM" privileges.

Recommendations: For versions 9.3.0.11 and earlier, consider restricting access to the working and temporary folders used by the Kaseya Virtual System Administrator agent to minimize the risk of exploitation. As a temporary workaround, consider implementing additional security measures to monitor and control the execution of binaries from these folders until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2017-12410

Affected Products

Kaseya Virtual System Administrator

References · 3

• https://osv.dev/vulnerability/CVE-2017-12410 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-12410 · Security Note
• http://securityfocus.com/archive/1/541884/100/0/threaded · Note