CVE-2018-12520
HIGHEPSS 95th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 95% of all known CVEs.
References
Related Vulnerabilities
Other CWE-335 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-14647 | High | 7.5 | 11% | - | Fix |
| CVE-2016-10180 | High | 7.5 | 4.4% | - | - |
| CVE-2021-27211 | High | 7.5 | 3.3% | - | - |
| CVE-2021-41117 | High | 8.7 | 3.1% | - | Fix |
| CVE-2017-11519 | Critical | 9.8 | 3.1% | - | - |
| CVE-2018-1426 | High | 7.4 | 2.5% | - | - |
Common questions
How do I fix CVE-2018-12520?
Upgrade ntopng on ubuntu 16.04 to 2.2+dfsg1-1ubuntu0.1~esm2 or later.
Is CVE-2018-12520 being actively exploited?
Not that we know of. CVE-2018-12520 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 10.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 95% of all scored CVEs.
How severe is CVE-2018-12520?
CVE-2018-12520 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2018-12520 affect?
Published advisories record a fix for ntopng (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.