CVE-2021-29416 Server-side request forgery in n/a
Attackers can bypass proxy settings to leak NetNTLM hashes via malicious requests in Burp Suite.
- 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-2021-29416?
CVE-2021-29416 is a medium-severity server-side request forgery vulnerability in n/a, published on 29 Mar 2021. 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
An issue was discovered in PortSwigger Burp Suite before 2021.2. During viewing of a malicious request, it can be manipulated into issuing a request that does not respect its upstream proxy configuration. This could leak NetNTLM hashes on Windows systems that fail to block outbound SMB.
Which versions are affected by CVE-2021-29416?
It affects 1 product.
Products include Portswigger Burp Suite.
How do I fix CVE-2021-29416?
No fix has been published for CVE-2021-29416 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-2021-29416 being exploited?
There is no known exploitation of CVE-2021-29416 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r2r7-rw7m-4rmc.