OSV-2020-343 Stack-use-after-return in ot::MeshCoP::ChannelMaskEntryBase::GetChannelPage
A stack-use-after-return vulnerability in OpenThread's ChannelMaskEntryBase 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-2020-343?
OSV-2020-343 is an use after free vulnerability in openthread, published on 1 Jul 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=13741
Crash type: Stack-use-after-return READ 1
Crash state:
ot::MeshCoP::ChannelMaskEntryBase::GetChannelPage
ot::MeshCoP::ChannelMaskTlv::GetChannelMask
ot::MeshCoP::ChannelMaskTlv::GetChannelMask
Which versions are affected by OSV-2020-343?
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-2020-343?
No fix has been published for OSV-2020-343 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-2020-343 being exploited?
There is no known exploitation of OSV-2020-343 in the wild and no public exploit code.