CVE-2021-30119 Authenticated Authenticated reflective XSS in Kaseya VSA <= v9.5.6
Authenticated attackers can execute arbitrary scripts via reflective XSS in Kaseya VSA, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-30119?
CVE-2021-30119 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Authenticated reflective XSS in HelpDeskTab/rcResults.asp The parameter result of /HelpDeskTab/rcResults.asp is insecurely returned in the requested web page and can be used to perform a Cross Site Scripting attack Example request: `https://x.x.x.x/HelpDeskTab/rcResults.asp?result=<script>alert(document.cookie)</script>` The same is true for the parameter FileName of /done.asp Eaxmple request: `https://x.x.x.x/done.asp?FileName=";</script><script>alert(1);a="&PathData=&originalName=shell.aspx&FileSize=4388&TimeElapsed=00:00:00.078`
Weakness: CWE-79
Which versions are affected by CVE-2021-30119?
It affects 1 product.
Products include Kaseya Vsa.
How do I fix CVE-2021-30119?
No fix has been published for CVE-2021-30119 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-2021-30119 being exploited?
There is no known exploitation of CVE-2021-30119 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2021-30120 2FA bypass in Kaseya VSA <= v9.5.6
- CVE-2021-30117 Authenticated SQL injection in Kaseya VSA < v9.5.6
- CVE-2021-30118 Unauthenticated Remote Code Execution in Kaseya VSA < v9.5.5
- CVE-2021-30201 Unauthenticated XML External Entity vulnerability in Kaseya VSA < v9.5.6
- CVE-2019-14510 Hardcoded credentials in n/a
Sources
Also known as GHSA-f43v-wh9x-rgq6.