OSV-2018-83 Heap-buffer-overflow in encode_LEARN
A heap-buffer-overflow in the OpenFlow encoding library allows attackers to cause denial of service or potentially execute code via crafted packets.
- 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-2018-83?
OSV-2018-83 is a memory corruption vulnerability in openvswitch, published on 13 Jan 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=12328
Crash type: Heap-buffer-overflow READ {*}
Crash state:
encode_LEARN
ofpacts_put_openflow_actions
ofputil_encode_flow_mod
Which versions are affected by OSV-2018-83?
1 open source package ship an affected version, including openvswitch.
| Package | Affected | Fixed in |
|---|---|---|
openvswitch OSS-Fuzz | All versions | None |
How do I fix OSV-2018-83?
No fix has been published for OSV-2018-83 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-2018-83 being exploited?
There is no known exploitation of OSV-2018-83 in the wild and no public exploit code.