CVE-2018-10561

Dasan Gigabit Passive Optical Network (GPON) Routers: GPON Routers Authentication Bypass

As of , CVE-2018-10561 in Dasan Gigabit Passive Optical Network (GPON) Routers is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 31 March 2022
US federal deadline
21 April 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.93Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.12 on 31 March 2022EPSS on the day CISA listed it.
Public exploit
1 Exploit-DB entry
Fix
No vendor link in CISA's entry

What CISA says to do

The impacted product is end-of-life and should be disconnected if still in use.

CISA's required action

What the flaw is

Dasan GPON Routers contain an authentication bypass vulnerability. When combined with CVE-2018-10562, exploitation can allow an attacker to perform remote code execution.

CISA's 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.

The CVE record's description, from mitre

CVE published
4 May 2018
Assigned by
mitre
CVSS
9.8 Critical (CVSS 3.1, from CISA-ADP)
CWE-287
Improper Authentication
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. Exploit-DB published an exploit (EDB-ID 44576).
  2. The CVE record was published.
  3. CISA added it to its list of exploited vulnerabilities.
  4. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Gigabit Passive Optical Network (GPON) Routers: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2018-10562GPON Routers Command InjectionDasan Gigabit Passive Optical Network (GPON) RoutersPatch this weekRansomware use; EPSS 0.990.99

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