OSV-2023-67 Heap-use-after-free in config__cleanup
A heap-use-after-free in the Mosquitto MQTT broker allows remote attackers to cause a denial of service via crafted network traffic.
- 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-2023-67?
OSV-2023-67 is an use after free vulnerability in mosquitto, published on 17 Feb 2023. 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=56009
Crash type: Heap-use-after-free READ 8
Crash state:
config__cleanup
mosquitto_fuzz_main
run_broker
Which versions are affected by OSV-2023-67?
1 open source package ship an affected version, including mosquitto.
| Package | Affected | Fixed in |
|---|---|---|
mosquitto OSS-Fuzz | All versions | None |
How do I fix OSV-2023-67?
No fix has been published for OSV-2023-67 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2023-67 being exploited?
There is no known exploitation of OSV-2023-67 in the wild and no public exploit code.