#VU24797 Permissions, Privileges, and Access Controls in Kronos webTA - CVE-2020-8495

Vulnerability identifier: #VU24797

Vulnerability risk: Medium

CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-8495

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Kronos webTA
Client/Desktop applications / Other client software

Vendor: Kronos Incorporated

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists within the "delegate", "delegateRole" and "delegatorUserId" parameters due to the “com.threeis.webta.H491delegate” servlet allows a remote attacker with Timekeeper or Supervisor privileges to gain unauthorized administrative privileges within the application.

This vulnerability affects the following versions of Kronos Web Time and Attendance:

• 3.8.x and later

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Kronos webTA: before 4.0

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External links
https://www.nolanbkennedy.com/post/privilege-escalation-in-kronos-web-time-and-attendance-webta
https://www.kronos.com/products/kronos-webta

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.