CVE-2020-7953 - Missing Authentication for Critical Function

Severity

75%

Complexity

39%

Confidentiality

60%

An issue was discovered in OpServices OpMon 9.3.2. Without authentication, it is possible to read server files (e.g., /etc/passwd) due to the use of the nmap -iL (aka input file) option.

CVSS 3.1 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N).

Demo Examples

Missing Authentication for Critical Function

CWE-306

In the following Java example the method createBankAccount is used to create a BankAccount object for a bank management application.


               }
                     return account;

However, there is no authentication mechanism to ensure that the user creating this bank account object has the authority to create new bank accounts. Some authentication mechanisms should be used to verify that the user has the authority to create bank account objects.

The following Java code includes a boolean variable and method for authenticating a user. If the user has not been authenticated then the createBankAccount will not create the bank account object.


               }// authenticate user,// if user is authenticated then set variable to true// otherwise set variable to false...

                     return account;account.setBalance(balance);

Overview

First reported 5 years ago

2020-02-06 17:15:00

Last updated 5 years ago

2020-02-11 01:45:00

Affected Software

OpServices OpMon 9.3.2

9.3.2

References

https://medium.com/@ph0rensic

Third Party Advisory

https://medium.com/@ph0rensic/three-cves-on-opmon-3ca775a262f5