CVE-2018-12520

HIGH

ntopng <3.4.180617 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-12520. PoCs published by Ioannis Profetis.

AI-analyzed exploit summary This exploit leverages a weak PRNG in ntop-ng < 3.4.180617 to predict session IDs, allowing an attacker to bypass authentication by brute-forcing the session cookie for a known username.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Ioannis Profetis · pythonwebappslua
https://www.exploit-db.com/exploits/44973

This exploit leverages a weak PRNG in ntop-ng < 3.4.180617 to predict session IDs, allowing an attacker to bypass authentication by brute-forcing the session cookie for a known username.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: ntop-ng < 3.4.180617
No auth needed
Prerequisites: knowledge of target username · access to the ntop-ng web interface
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44973/
Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2018/Jul/14

Scores

CVSS v3 8.1
EPSS 0.1067
EPSS Percentile 95.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-335
Status published
Products (1)
ntop/ntopng 3.4 - 3.4.180617
Published Jul 05, 2018
Tracked Since Feb 18, 2026