SB2019022605 - Authentication bypass in EmbedThis Appweb

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Authentication (CVE-ID: CVE-2018-8715)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to a logical error in authConditionfunction in http/httpLib.c. A remote attacker can send a specially crafted HTTP request to the affected system that contains a valid username and empty password, bypass authentication process and gain unauthorized access to the application.

Successful exploitation of the vulnerability requires knowledge of a valid username.

Remediation

Install update from vendor's website.

References

• https://blogs.securiteam.com/index.php/archives/3676
• https://github.com/embedthis/appweb/issues/610
• https://securityadvisories.paloaltonetworks.com/Home/Detail/127