Vulnerability in Samsung Galaxy Apps
CVE-2018-20135
Samsung Galaxy Apps before 4.4.01.7 allows modification of the hostname used for load balancing on installations of applications through a man-in-the-middle attack. An attacker may trick Galaxy Apps into using an arbitrary hostname for which the attacker can provide a valid SSL certificate, and emulate the API of the app store to modify existing apps at installation time. The specific flaw involves an HTTP method to obtain the load-balanced hostname that enforces SSL only after obtaining a hostname from the load balancer, and a missing app signature validation in the application XML. An attacker can exploit this vulnerability to achieve Remote Code Execution on the device. The Samsung ID is SVE-2018-12071.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
Weakness classification (CWE)
References
- security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)
- www.adyta.pt/en/2019/01/29/writeup-samsung-app-store-rce-via-mitm-2/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-20135?
- CVE-2018-20135 is a high-severity vulnerability in Samsung Galaxy Apps, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2019-06-07.
- How severe is CVE-2018-20135?
- High severity. CVSS v3 base score is 8.1 out of 10.