Vulnerability record · CVE-2018-12520 · published 5 July 2018
CVE-2018-12520: Ntopng vulnerability
Ntop · Ntopng
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.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| http://seclists.org/fulldisclosure/2018/Jul/14 | ExploitMailing ListThird Party Advisory |
| https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7f | Exploit |
| https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221a | Patch |
| https://www.exploit-db.com/exploits/44973/ | ExploitThird Party AdvisoryVDB Entry |
| http://seclists.org/fulldisclosure/2018/Jul/14 | ExploitMailing ListThird Party Advisory |
| https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7f | Exploit |
| https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221a | Patch |
| https://www.exploit-db.com/exploits/44973/ | ExploitThird Party AdvisoryVDB Entry |
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Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
Source: NIST National Vulnerability Database (record CVE-2018-12520), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.
