OSV-2021-1347 Invalid-free in generic specialization <Swift.Int> of Swift.Array.subscript.getter :
An invalid-free vulnerability in the SwiftProtobuf library allows attackers to cause a denial of service via crafted JSON 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-2021-1347?
OSV-2021-1347 is a memory corruption vulnerability in swift-protobuf, published on 22 Sep 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=39049
Crash type: Invalid-free
Crash state:
generic specialization <Swift.Int> of Swift.Array.subscript.getter :
SwiftProtobuf.
SwiftProtobuf.Google_Protobuf_Timestamp.decodeJSON
Which versions are affected by OSV-2021-1347?
1 open source package ship an affected version, including swift-protobuf.
| Package | Affected | Fixed in |
|---|---|---|
swift-protobuf OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1347?
No fix has been published for OSV-2021-1347 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-2021-1347 being exploited?
There is no known exploitation of OSV-2021-1347 in the wild and no public exploit code.