Vulnerability identifier: #VU46255

Vulnerability risk: Medium

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3495

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Jabber
Client/Desktop applications / Messaging software

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to improper validation of message contents. A remote authenticated attacker can send specially crafted Extensible Messaging and Presence Protocol (XMPP) messages and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Jabber: 12.1 - 12.9

---

External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-UyTKCPGg

---

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.