OSV-2020-757 Heap-buffer-overflow in cras_channel_remix_conv_create
A heap buffer overflow in the Chrome OS audio service allows attackers to cause denial of service or potentially execute code.
- 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-2020-757?
OSV-2020-757 is a memory corruption vulnerability in cras, published on 9 Jul 2020. 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=23612
Crash type: Heap-buffer-overflow READ 4
Crash state:
cras_channel_remix_conv_create
audio_thread_config_global_remix
ccr_handle_message_from_client
Which versions are affected by OSV-2020-757?
1 open source package ship an affected version, including cras.
| Package | Affected | Fixed in |
|---|---|---|
cras OSS-Fuzz | All versions | None |
How do I fix OSV-2020-757?
No fix has been published for OSV-2020-757 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-2020-757 being exploited?
There is no known exploitation of OSV-2020-757 in the wild and no public exploit code.