CVE-2019-12806 Memory corruption in UniSign
Remote attackers can execute arbitrary code via crafted HTTPS packets due to a stack-based buffer overflow in UniSign.
- 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-2019-12806?
CVE-2019-12806 is a high-severity memory corruption vulnerability in CROSSCERT UniSign, published on 13 Aug 2019. 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
UniSign 2.0.4.0 and earlier version contains a stack-based buffer overflow vulnerability which can overwrite the stack with arbitrary data, due to a buffer overflow in a library. That leads remote attacker to execute arbitrary code via crafted https packets.
Which versions are affected by CVE-2019-12806?
It affects 1 product.
Products include Crosscert Unisign.
How do I fix CVE-2019-12806?
No fix has been published for CVE-2019-12806 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-2019-12806 being exploited?
There is no known exploitation of CVE-2019-12806 in the wild and no public exploit code.
Sources
Also known as GHSA-fcj6-53h4-pjm3.