CVE-2021-39521 Null dereference in n/a
A NULL pointer dereference in libredwg allows attackers to cause a denial of service via crafted DWG files.
- 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-2021-39521?
CVE-2021-39521 is a medium-severity vulnerability in Gnu Libredwg, published on 20 Sep 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 libredwg through v0.10.1.3751. A NULL pointer dereference exists in the function bit_read_BB() located in bits.c. It allows an attacker to cause Denial of Service.
Weakness: CWE-476
Which versions are affected by CVE-2021-39521?
It affects 1 product.
Products include Gnu Libredwg.
How do I fix CVE-2021-39521?
No fix has been published for CVE-2021-39521 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-39521 being exploited?
There is no known exploitation of CVE-2021-39521 in the wild and no public exploit code.
Other vulnerabilities in Gnu Libredwg
Sources
Also known as GHSA-3fvf-wxcf-7v9q.