OSV-2021-1809 Heap-buffer-overflow in ujson.cpython-38-x86_64-linux-gnu.so
A heap-buffer-overflow in the ujson Python library allows attackers to cause denial of service or potentially execute code via crafted JSON 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-2021-1809?
OSV-2021-1809 is a memory corruption vulnerability in ujson, published on 25 Feb 2022. 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=44973
Crash type: Heap-buffer-overflow WRITE 1
Crash state:
ujson.cpython-38-x86_64-linux-gnu.so
ujson.cpython-38-x86_64-linux-gnu.so
ujson.cpython-38-x86_64-linux-gnu.so
Which versions are affected by OSV-2021-1809?
1 open source package ship an affected version, including ujson.
| Package | Affected | Fixed in |
|---|---|---|
ujson PyPI | All versions | None |
How do I fix OSV-2021-1809?
No fix has been published for OSV-2021-1809 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-2021-1809 being exploited?
There is no known exploitation of OSV-2021-1809 in the wild and no public exploit code.