OSV-2020-85 Dynamic-stack-buffer-overflow in janus_rtcp_incoming_transport_cc
A dynamic stack buffer overflow in the Janus WebRTC server's RTCP handling allows remote attackers to cause a denial of service.
- 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-2020-85?
OSV-2020-85 is a memory corruption vulnerability in janus-gateway, published on 24 Jun 2020. 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=20529
Crash type: Dynamic-stack-buffer-overflow READ 2
Crash state:
janus_rtcp_incoming_transport_cc
janus_rtcp_fix_ssrc
rtcp_fuzzer.c
Which versions are affected by OSV-2020-85?
1 open source package ship an affected version, including janus-gateway.
| Package | Affected | Fixed in |
|---|---|---|
janus-gateway OSS-Fuzz | All versions | None |
How do I fix OSV-2020-85?
No fix has been published for OSV-2020-85 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-2020-85 being exploited?
There is no known exploitation of OSV-2020-85 in the wild and no public exploit code.