OSV-2020-1643 Heap-use-after-free in UA_NodeMap_delete
A heap-use-after-free vulnerability in the OPC UA library allows attackers to cause denial of service or potentially execute code via crafted messages.
- 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-2020-1643?
OSV-2020-1643 is an use after free vulnerability in open62541, published on 22 Aug 2020. 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=25068
Crash type: Heap-use-after-free READ 4
Crash state:
UA_NodeMap_delete
UA_Server_new
fuzz_binary_message.cc
Which versions are affected by OSV-2020-1643?
1 open source package ship an affected version, including open62541.
| Package | Affected | Fixed in |
|---|---|---|
open62541 OSS-Fuzz | All versions | None |
How do I fix OSV-2020-1643?
No fix has been published for OSV-2020-1643 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-2020-1643 being exploited?
There is no known exploitation of OSV-2020-1643 in the wild and no public exploit code.