OSV-2020-2264 Stack-buffer-overflow in ot::IsValidUtf8String
A stack buffer overflow in OpenThread's UTF-8 validation allows attackers to cause a denial of service via crafted network packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-2264?
OSV-2020-2264 is a memory corruption vulnerability in openthread, published on 16 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28682
Crash type: Stack-buffer-overflow READ 1
Crash state:
ot::IsValidUtf8String
ot::MeshCoP::NetworkNameTlv::IsValid
ot::MeshCoP::Tlv::IsValid
Which versions are affected by OSV-2020-2264?
1 open source package ship an affected version, including openthread.
| Package | Affected | Fixed in |
|---|---|---|
openthread OSS-Fuzz | All versions | None |
How do I fix OSV-2020-2264?
No fix has been published for OSV-2020-2264 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-2020-2264 being exploited?
There is no known exploitation of OSV-2020-2264 in the wild and no public exploit code.