Improper Certificate Validation in OpenWrt
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-5102 |
| CWE-ID | CWE-295 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
OpenWrt Operating systems & Components / Operating system |
| Vendor | openwrt.org |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Improper Certificate Validation
EUVDB-ID: #VU35062
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-5102
CWE-ID:
CWE-295 - Improper Certificate Validation
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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.
MitigationInstall update from vendor's website.
Vulnerable software versionsOpenWrt: 15.05.1 - 18.06.4
External linkshttp://talosintelligence.com/vulnerability_reports/TALOS-2019-0893
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
