OSV-2021-1549 Uncaught exception in com.google.gson.internal.bind.TypeAdapters$27.read
An uncaught exception in Gson's TypeAdapters can cause a denial of service when processing specific JSON inputs.
- 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-2021-1549?
OSV-2021-1549 is a denial of service vulnerability in gson, published on 9 Nov 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=40830
Crash type: Uncaught exception
Crash state:
com.google.gson.internal.bind.TypeAdapters$27.read
java.base/java.lang.StringUTF16.compress
java.base/java.lang.String.<init>
Which versions are affected by OSV-2021-1549?
1 open source package ship an affected version, including gson.
| Package | Affected | Fixed in |
|---|---|---|
gson OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1549?
No fix has been published for OSV-2021-1549 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is OSV-2021-1549 being exploited?
There is no known exploitation of OSV-2021-1549 in the wild and no public exploit code.