OSV-2017-55 Heap-double-free in ExtensionObject_deleteMembers
A heap double-free vulnerability in the OPC UA library allows attackers to cause denial of service or potentially execute arbitrary code via crafted binary data.
- 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-2017-55?
OSV-2017-55 is an use after free vulnerability in open62541, 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=4296
Crash type: Heap-double-free
Crash state:
ExtensionObject_deleteMembers
UA_Array_delete
Array_decodeBinary
Which versions are affected by OSV-2017-55?
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-2017-55?
No fix has been published for OSV-2017-55 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-2017-55 being exploited?
There is no known exploitation of OSV-2017-55 in the wild and no public exploit code.