#VU23471 Spoofing attack in Skype for Business Server - CVE-2019-1490

Vulnerability identifier: #VU23471

Vulnerability risk: Low

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

CVE-ID: CVE-2019-1490

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Skype for Business Server
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data. A remote authenticated attacker can send a specially crafted request to the server, trick a victim to click a specially crafted URL and spoof page content.

Successful exploitation of the vulnerability may allow to perform cross-site scripting attacks on affected systems and run scripts in the security context of the current user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Skype for Business Server: 2019 CU2

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1490

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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.