CVE-2019-7703 Use after free in n/a
Remote attackers can cause a denial-of-service in Binaryen by exploiting a use-after-free vulnerability via a malicious WebAssembly file.
- 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
- Available
What is CVE-2019-7703?
CVE-2019-7703 is a medium-severity use after free vulnerability in n/a, published on 10 Feb 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
In Binaryen 1.38.22, there is a use-after-free problem in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp. Remote attackers could leverage this vulnerability to cause a denial-of-service via a wasm file, as demonstrated by wasm-merge.
Weakness: CWE-416
Which versions are affected by CVE-2019-7703?
It affects 1 product.
Products include Webassembly Binaryen.
How do I fix CVE-2019-7703?
Upgrade to a fixed version.
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-2019-7703 being exploited?
There is no known exploitation of CVE-2019-7703 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-7703, GHSA-9w62-w3v4-9qmp.