Vulnerability in Openwrt
CVE-2019-5102
An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.
Vulnerability class: Improper Certificate Validation
EPSS: 0.008 (52.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N.
Affected products
- Openwrt — versions OpenWrt 15.05.1, via wget (busybox), 18.06.4, 15.05.1
Weakness classification (CWE)
References
- talos-cna@cisco.com (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-5102?
- CVE-2019-5102 is a medium-severity vulnerability in Openwrt, classified under Improper Certificate Validation. CVSS score: 4.0/10. Published 2019-11-18.
- How severe is CVE-2019-5102?
- Medium severity. CVSS v3 base score is 4.0 out of 10.