Information Leak in OpenWrt’s ustream-ssl Library Affects Multiple Versions

CVE-2019-5102

What is CVE-2019-5102?

The ustream-ssl library within OpenWrt versions 18.06.4 and 15.05.1 has a significant information leak vulnerability. When a client connects to a remote server, the SSL certificate validation process is initiated, but improper handling of invalid certificates leaves the system vulnerable. An attacker can exploit this flaw through a man-in-the-middle attack, introducing a rogue SSL certificate that tricks the victim into sending sensitive data unencrypted, compromising the confidentiality of the transmitted information during the initial request.

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