CVE-2021-33793 Memory corruption in n/a
An out-of-bounds write in Foxit Reader and PhantomPDF during Office document conversion allows attackers to execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33793?
CVE-2021-33793 is a critical memory corruption vulnerability in Foxitsoftware Foxit Reader, published on 11 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 have an out-of-bounds write because the Cross-Reference table is mishandled during Office document conversion.
Weakness: CWE-787
Which versions are affected by CVE-2021-33793?
It affects 2 products.
Products include Foxitsoftware Foxit Reader, Foxitsoftware Phantompdf.
How do I fix CVE-2021-33793?
No fix has been published for CVE-2021-33793 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-33793 being exploited?
There is no known exploitation of CVE-2021-33793 in the wild and no public exploit code.
Other vulnerabilities in Foxitsoftware Foxit Reader
Sources
Also known as GHSA-mj9w-85gp-35pc.