VulnerabilityAnalyzed
CVE-2018-10561
Dasan GPON Routers Authentication Bypass Vulnerability
KEVCRITICAL 9.8EPSS 92.9%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 21 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
An issue was discovered on Dasan GPON home routers. It is possible to 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. One can then manage the device.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 92.89% probability · 100th percentile
- CISA KEV
- Listed 31 March 2022 · due 21 April 2022
- Weakness
- CWE-287
- Affected
- dasannetworks/gpon router firmware
- Source
- cve@mitre.org
CISA notes
The impacted product is end-of-life and should be disconnected if still in use. https://nvd.nist.gov/vuln/detail/CVE-2018-10561
References
- http://www.securityfocus.com/bid/107053Broken Link, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44576/Exploit, Third Party Advisory, VDB Entry
- https://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/Exploit, Technical Description, Third Party Advisory
- http://www.securityfocus.com/bid/107053Broken Link, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44576/Exploit, Third Party Advisory, VDB Entry
- https://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/Exploit, Technical Description, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-10561US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.