Vulnerability identifier: #VU52933

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1478

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Unified Communications Manager (CallManager)
Server applications / Remote management servers, RDP, SSH
Cisco Unified Communications Manager Session Management Edition
Server applications / Remote management servers, RDP, SSH

Vendor:

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the Java Management Extensions (JMX) component. A remote attacker can access the port and restart the JMX process, leading to denial of service (DoS) condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucm-dos-OO4SRYEf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.