CVE-2020-36402 Use after free in n/a
A stack-use-after-return vulnerability in the Solidity compiler's SMT solver interface allows attackers to potentially execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-36402?
CVE-2020-36402 is a high-severity use after free vulnerability in n/a, published on 1 Jul 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Solidity 0.7.5 has a stack-use-after-return issue in smtutil::CHCSmtLib2Interface::querySolver. NOTE: c39a5e2b7a3fabbf687f53a2823fc087be6c1a7e is cited in the OSV "fixed" field but does not have a code change.
Weakness: CWE-787
Which versions are affected by CVE-2020-36402?
It affects 1 product.
Products include Soliditylang Solidity.
How do I fix CVE-2020-36402?
No fix has been published for CVE-2020-36402 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-2020-36402 being exploited?
There is no known exploitation of CVE-2020-36402 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-jw48-cfqw-3fqv.