CVE-2019-0798 Cross-site scripting in Microsoft Lync Server 2013
Attackers can spoof content in Skype for Business or Lync Server by exploiting improper request sanitization, potentially misleading users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-0798?
CVE-2019-0798 is a medium-severity cross-site scripting vulnerability in Microsoft Lync Server 2013, published on 9 Apr 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A spoofing vulnerability exists when a Lync Server or Skype for Business Server does not properly sanitize a specially crafted request, aka 'Skype for Business and Lync Spoofing Vulnerability'.
Weakness: CWE-79
Which versions are affected by CVE-2019-0798?
It affects 2 products.
Products include Microsoft Lync Server, Microsoft Skype for Business Server.
How do I fix CVE-2019-0798?
No fix has been published for CVE-2019-0798 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-0798 being exploited?
There is no known exploitation of CVE-2019-0798 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Lync Server 2013
- CVE-2022-33633 Skype for Business and Lync Remote Code Execution Vulnerability
- CVE-2021-26422 Skype for Business and Lync Remote Code Execution Vulnerability
- CVE-2022-26911 Skype for Business Information Disclosure Vulnerability
- CVE-2021-26421 Skype for Business and Lync Spoofing Vulnerability
- CVE-2021-24073 Skype for Business and Lync Spoofing Vulnerability
Sources
Also known as GHSA-43cx-jhp3-2qcr.