CVE-2018-3903
moderate-risk
Published 2018-08-23
On Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17, the video-core process incorrectly extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. An attacker can send an HTTP request to trigger this vulnerability. The memcpy call overflows the destination buffer, which has a size of 512 bytes. An attacker can send an arbitrarily long "url" value in order to overwrite the saved-PC with 0x42424242.
Do I need to act?
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0.37% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.9/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
39
/ 100
moderate-risk
Severity
33/34 · Critical
Exploitability
1/34 · Minimal
Exposure
5/34 · Minimal