Vulnerabilities > CVE-2018-12520 - Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG) vulnerability in Ntop Ntopng 3.4
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An issue was discovered in ntopng 3.4 before 3.4.180617. The PRNG involved in the generation of session IDs is not seeded at program startup. This results in deterministic session IDs being allocated for active user sessions. An attacker with foreknowledge of the operating system and standard library in use by the host running the service and the username of the user whose session they're targeting can abuse the deterministic random number generation in order to hijack the user's session, thus escalating their access.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 |
Common Weakness Enumeration (CWE)
Exploit-Db
| description | ntop-ng < 3.4.180617 - Authentication Bypass. CVE-2018-12520. Webapps exploit for Lua platform. Tags: Authentication Bypass / Credentials Bypass (AB/CB) |
| file | exploits/lua/webapps/44973.py |
| id | EDB-ID:44973 |
| last seen | 2018-07-03 |
| modified | 2018-07-03 |
| platform | lua |
| port | |
| published | 2018-07-03 |
| reporter | Exploit-DB |
| source | https://www.exploit-db.com/download/44973/ |
| title | ntop-ng < 3.4.180617 - Authentication Bypass |
| type | webapps |
Packetstorm
| data source | https://packetstormsecurity.com/files/download/148392/ntopng-bypass.txt |
| id | PACKETSTORM:148392 |
| last seen | 2018-07-03 |
| published | 2018-07-02 |
| reporter | Ioannis Profetis |
| source | https://packetstormsecurity.com/files/148392/ntop-ng-Authentication-Bypass.html |
| title | ntop-ng Authentication Bypass |