CVE Vulnerability

CVE-2019-5101

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

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:openwrt:openwrt:15.05.1:*:*:*:*:*:*:*
cpe:2.3:a:openwrt:openwrt:18.06.4:*:*:*:*:*:*:*
Information

Published : 2019-11-18 06:15

Updated : 2022-06-21 07:22

NVD link : CVE-2019-5101

Mitre link : CVE-2019-5101

Products Affected
No products.
CWE
CWE-295

Improper Certificate Validation