OSV-2020-2320 UNKNOWN WRITE in cpu_arm_exec_arm
A memory corruption vulnerability in QEMU's ARM emulator allows attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-2320?
OSV-2020-2320 is a memory corruption vulnerability in unicorn, published on 4 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20220
Crash type: UNKNOWN WRITE
Crash state:
cpu_arm_exec_arm
tcg_exec_all_arm
qemu_tcg_cpu_loop
Which versions are affected by OSV-2020-2320?
1 open source package ship an affected version, including unicorn.
| Package | Affected | Fixed in |
|---|---|---|
unicorn OSS-Fuzz | All versions | None |
How do I fix OSV-2020-2320?
No fix has been published for OSV-2020-2320 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-2020-2320 being exploited?
There is no known exploitation of OSV-2020-2320 in the wild and no public exploit code.