CVE-2019-5101— OpenWrt 信任管理问题漏洞

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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. After an SSL connection is initialized via _ustream_ssl_init, and after any data (e.g. the client's HTTP request) is written to the stream using ustream_printf, the code eventually enters the function _ustream_ssl_poll, which is used to dispatch the read/write events

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

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OpenWrt 信任管理问题漏洞

OpenWrt是一套针对嵌入式设备的Linux操作系统。ustream-ssl是其中的一个加密库。 OpenWrt 18.06.4版本和15.05.1版本中的ustream-ssl库存在信任管理问题漏洞。该漏洞源于网络系统或产品中缺乏有效的信任管理机制。攻击者可利用默认密码或者硬编码密码、硬编码证书等攻击受影响组件。

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