CVE-2018-3903: samsung sth-eth-250_firmware Out-of-bounds Write
Vulnerability summary
CVE-2018-3903 is a critical (CVSS 9.9) Out-of-bounds Write vulnerability in samsung sth-eth-250_firmware. EPSS estimates a 1.80% chance of exploitation in the next 30 days, higher than 78.2% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 23-08-2018PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST9.9CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
1.80%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
0.00 pp
From 1.80% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Samsung1 product
- sth-eth-250_firmware0.20.17
Talos1 product
- samsungSamsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17
2 vendors · 2 products
References
1 links- www.talosintelligence.com/vulnerability_reports/TALOS-2018-0574X Refsource MISCExploitThird Party Advisory