An issue was discovered in ntopng 3.4 before 3.4.180617.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12520
- 2026-10-03 Alias added: GHSA-mx87-47cg-9wpg
References
More Ntopng vulnerabilities
- TI-2026-28235 ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to… CVSS 3.1CRITICAL 9.8
- TI-2017-03496 Cross-site request forgery (CSRF) vulnerability in ntopng through 2.4 allows remote… CVSS 3.0HIGH 8.8
- TI-2017-05107 The NetworkInterface::getHost function in NetworkInterface.cpp in ntopng before 3.0… CVSS 3.0HIGH 7.5
- TI-2015-06889 ntopng (aka ntop) before 2.2 allows remote authenticated users to change the login… CVSS 2.0MEDIUM 6.0
- TI-2017-05108 ntopng before 3.0 allows HTTP Response Splitting. CVSS 3.0HIGH 7.5
- TI-2017-05069 ntopng before 3.0 allows XSS because GET and POST parameters are improperly validated. CVSS 3.0MEDIUM 6.1
Sources
- CVE-2018-12520 · CVE Program
- CVE-2018-12520 · NVD
- FIRST EPSS
- GHSA-mx87-47cg-9wpg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences