CVE-2021-36080 Use after free in n/a
A double-free vulnerability in GNU LibreDWG allows attackers to cause denial of service or potentially execute arbitrary code 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-2021-36080?
CVE-2021-36080 is a high-severity use after free vulnerability in Gnu Libredwg, published on 1 Jul 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
GNU LibreDWG 0.12.3.4163 through 0.12.3.4191 has a double-free in bit_chain_free (called from dwg_encode_MTEXT and dwg_encode_add_object).
Weakness: CWE-415
Which versions are affected by CVE-2021-36080?
It affects 1 product.
Products include Gnu Libredwg.
How do I fix CVE-2021-36080?
No fix has been published for CVE-2021-36080 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-36080 being exploited?
There is no known exploitation of CVE-2021-36080 in the wild and no public exploit code.
Other vulnerabilities in Gnu Libredwg
Sources
Also known as GHSA-qj5h-583m-qh6v.