OSV-2021-830 Heap-use-after-free in AK::Utf8CodePointIterator::operator*
A heap-use-after-free in the URL parser allows attackers to cause crashes or potentially execute code via crafted URLs.
- 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-2021-830?
OSV-2021-830 is an use after free vulnerability in serenity, published on 5 Jun 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=34911
Crash type: Heap-use-after-free READ 1
Crash state:
AK::Utf8CodePointIterator::operator*
AK::URLParser::parse
AK::URL::URL
Which versions are affected by OSV-2021-830?
1 open source package ship an affected version, including serenity.
| Package | Affected | Fixed in |
|---|---|---|
serenity OSS-Fuzz | All versions | None |
How do I fix OSV-2021-830?
No fix has been published for OSV-2021-830 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 OSV-2021-830 being exploited?
There is no known exploitation of OSV-2021-830 in the wild and no public exploit code.