CVE-2023-50434
CRITICALemdns - Stack-based Buffer Overflow via DNS Request Handling
Title source: llmDescription
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
Various Sources
https://papers.mathyvanhoef.com/esorics2024.pdf
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