CVE-2020-24772 Server-side request forgery in n/a
Attackers can force the Clash client to access remote SMB shares via crafted URLs, enabling NTLM relay attacks for code execution or credential theft.
- 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-2020-24772?
CVE-2020-24772 is a high-severity server-side request forgery vulnerability in n/a, published on 21 Mar 2022. 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
In Dreamacro Clash for Windows v0.11.4, an attacker could embed a malicious iframe in a website with a crafted URL that would launch the Clash Windows client and force it to open a remote SMB share. Windows will perform NTLM authentication when opening the SMB share and that request can be relayed (using a tool like responder) for code execution (or captured for hash cracking).
Weakness: CWE-346
Which versions are affected by CVE-2020-24772?
It affects 1 product.
Products include Clash Project Clash.
How do I fix CVE-2020-24772?
No fix has been published for CVE-2020-24772 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2020-24772 being exploited?
There is no known exploitation of CVE-2020-24772 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-9p6p-g2wp-cr53.