CVE-2018-12520

HighCVSS 8.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-335

Affected software

No affected versions have been published.

Timeline

Published
Jul 5, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2018-12520: High severity, CVSS 8.1 | Vulnix