CVE-2017-6900
An issue was discovered in Riello NetMan 204 14-2 and 15-2.
Published 7 y ago · modified 4 mo ago · JSON
Summary
An issue was discovered in Riello NetMan 204 14-2 and 15-2. The issue is with the login script and wrongpass Python script used for authentication. When calling wrongpass, the variables $VAL0 and $VAL1 should be enclosed in quotes to prevent the potential for Bash command injection. Further to this, VAL0 and VAL1 should be sanitised to ensure they do not contain malicious characters. Passing it the username of '-' will cause it to time out and log the user in because of poor error handling. This will log the attacker in as an administrator where the telnet / ssh services can be enabled, and the credentials for local users can be reset. Also, login.cgi accepts the username as a GET parameter, so login can be achieved by browsing to the /cgi-bin/login.cgi?username=-%20a URI.
Exploit prediction (EPSS)
2.63% probability of exploitation in the next 30 days, higher than 86% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
- CWE-255 Credentials Management Errors
References
- blog.synack.co.uk /2017/01/31/my-first-exploit-db-post/ · x_refsource_MISC, x_transferred
- web.archive.org /web/20170205100702/https://blog.synack.co.uk/2017/01/31/my-first-exploit-db-post/ · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2017-6900
- NVD: CVE-2017-6900
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.