CVE-2023-50434 Memory corruption in n/a
A remote attacker can trigger a stack-based buffer over-read in emDNS by sending malformed DNS requests, potentially causing crashes or leaking memory.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-50434?
CVE-2023-50434 is a critical memory corruption vulnerability in n/a, published on 29 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
emdns_resolve_raw in emdns.c in emdns through fbd1eef calls strlen with an input that may not be '\0' terminated, leading to a stack-based buffer over-read. This can be triggered by a remote adversary that can send DNS requests to the emdns server. The impact could vary depending on the system libraries, compiler, and processor architecture. Code before be565c3 is unaffected.
Weakness: CWE-121
Which versions are affected by CVE-2023-50434?
How do I fix CVE-2023-50434?
No fix has been published for CVE-2023-50434 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 CVE-2023-50434 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-50434 exists.
Sources
Also known as GHSA-rmf6-4xgx-9wxc.