OSV-2020-2197 Heap-use-after-free in decode_NXAST_RAW_ENCAP
A heap-use-after-free vulnerability in the OpenFlow protocol decoder allows attackers to potentially execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-2197?
OSV-2020-2197 is an use after free vulnerability in openvswitch, published on 27 Nov 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851
Crash type: Heap-use-after-free WRITE 2
Crash state:
decode_NXAST_RAW_ENCAP
ofpact_decode
ofpacts_decode
Which versions are affected by OSV-2020-2197?
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-2020-2197?
No fix has been published for OSV-2020-2197 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-2020-2197 being exploited?
There is no known exploitation of OSV-2020-2197 in the wild and no public exploit code.