OSV-2020-57 Stack-buffer-overflow in ot::NetworkData::PrefixTlv::GetPrefixLength
A stack buffer overflow in the Thread network data prefix validation allows remote attackers to cause a denial of service.
- 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-2020-57?
OSV-2020-57 is a memory corruption vulnerability in openthread, published on 24 Jun 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=23267
Crash type: Stack-buffer-overflow READ 1
Crash state:
ot::NetworkData::PrefixTlv::GetPrefixLength
ot::NetworkData::NetworkData::FindPrefix
ot::NetworkData::Leader::Validate
Which versions are affected by OSV-2020-57?
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-2020-57?
No fix has been published for OSV-2020-57 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-2020-57 being exploited?
There is no known exploitation of OSV-2020-57 in the wild and no public exploit code.