OSV-2021-453 UNKNOWN WRITE in std::__1::pair<unsigned int, void*> uWS::HttpParser::fenceAndConsumePostPadded<0
A memory corruption vulnerability in the uWebSockets HTTP parser allows attackers to cause denial of service or potentially execute arbitrary code via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-453?
OSV-2021-453 is a memory corruption vulnerability in uwebsockets, published on 28 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31457
Crash type: UNKNOWN WRITE
Crash state:
std::__1::pair<unsigned int, void*> uWS::HttpParser::fenceAndConsumePostPadded<0
uWS::HttpParser::consumePostPadded
std::__1::__function::__func<LLVMFuzzerTestOneInput::$_0, std::__1::allocator<LL
Which versions are affected by OSV-2021-453?
1 open source package ship an affected version, including uwebsockets.
| Package | Affected | Fixed in |
|---|---|---|
uwebsockets OSS-Fuzz | All versions | None |
How do I fix OSV-2021-453?
No fix has been published for OSV-2021-453 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 OSV-2021-453 being exploited?
There is no known exploitation of OSV-2021-453 in the wild and no public exploit code.