Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ntop | Ntopng | >= 3.4, < 3.4.180617 |
Related Weaknesses (CWE)
References
- http://seclists.org/fulldisclosure/2018/Jul/14ExploitMailing ListThird Party Advisory
- https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7fExploit
- https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221aPatch
- https://www.exploit-db.com/exploits/44973/ExploitThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2018/Jul/14ExploitMailing ListThird Party Advisory
- https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7fExploit
- https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221aPatch
- https://www.exploit-db.com/exploits/44973/ExploitThird Party AdvisoryVDB Entry
FAQ
What is CVE-2018-12520?
CVE-2018-12520 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 ...
How severe is CVE-2018-12520?
CVE-2018-12520 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-12520?
Check the references section above for vendor advisories and patch information. Affected products include: Ntop Ntopng.