CVE-2023-50434

CRITICAL

emdns - Stack-based Buffer Overflow via DNS Request Handling

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0056
EPSS Percentile 42.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-121
Status published
Published Apr 29, 2024
Tracked Since Feb 18, 2026