#VU48947 Cross-site scripting in Cisco Systems, Inc products - CVE-2020-26085

Vulnerability identifier: #VU48947

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-26085

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Jabber for Windows
Client/Desktop applications / Messaging software
Cisco Jabber for MacOS
Client/Desktop applications / Messaging software
Cisco Jabber for Android and iOS
Client/Desktop applications / Messaging software

Vendor: Cisco Systems, Inc

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within message contents. A remote authenticted attacker can trick the victim to open specially crafted XMPP messages and execute arbitrary HTML and script code in user's browser in context of vulnerable website, leading to arbitraty code execution with elevated privileges.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Jabber for Windows: 12.1 - 12.9

Cisco Jabber for MacOS: 12.7 - 12.9

Cisco Jabber for Android and iOS: 12.8 - 12.9

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-ZktzjpgO

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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.