Multiple vulnerabilities in Dasan GPON routers
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-10561 CVE-2018-10562 |
| CWE-ID | CWE-592 CWE-77 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild. |
| Vulnerable software Subscribe |
GPON Hardware solutions / Routers for home users |
| Vendor | Dasan Networks |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Authentication bypass
EUVDB-ID: #VU12660
Risk: Critical
CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-10561
CWE-ID:
CWE-592 - Authentication Bypass Issues
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to bypass authentication on the target system.
The weakness exists due to improper authentication restrictions. A remote attacker can bypass authentication simply by appending "?images" to any URL of the device that requires authentication, as demonstrated by the /menu.html?images/ or /GponForm/diag_FORM?images/ URI.
Note: the vulnerability is being exploited by various attachers to deliver several Mirai variants (e.g., Satori, JenX, etc.).
Install update from vendor's website.
Vulnerable software versionsGPON: All versions
External linkshttp://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
2) Command injection
EUVDB-ID: #VU12661
Risk: High
CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-10562
CWE-ID:
CWE-77 - Command injection
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The weakness exists due to command injection via the dest_host parameter in a diag_action=ping request to a GponForm/diag_Form URI. A remote attacker can inject arbitrary commands and execute arbitrary code because the router saves ping results in /tmp and transmits them to the user when the user revisits /diag.html.
Install update from vendor's website.
Vulnerable software versionsGPON: All versions
External linkshttp://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
