OSV-2021-435 Stack-buffer-overflow in ot::Cli::Interpreter::OutputFormatV
A stack buffer overflow in the OpenThread CLI interpreter allows remote attackers to cause a denial of service via crafted DNS service responses.
- 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-2021-435?
OSV-2021-435 is a memory corruption vulnerability in openthread, published on 23 Feb 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=31232
Crash type: Stack-buffer-overflow READ {*}
Crash state:
ot::Cli::Interpreter::OutputFormatV
ot::Cli::Interpreter::OutputLine
ot::Cli::Interpreter::HandleDnsServiceResponse
Which versions are affected by OSV-2021-435?
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-2021-435?
No fix has been published for OSV-2021-435 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-2021-435 being exploited?
There is no known exploitation of OSV-2021-435 in the wild and no public exploit code.