CVE-2018-12520
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 10.5%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 10.54% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · first 3 July 2018
- CISA KEV
- Not listed
- Weakness
- CWE-335
- Affected
- ntop/ntopng
- Source
- cve@mitre.org
EPSS 10.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://seclists.org/fulldisclosure/2018/Jul/14Exploit, Mailing List, Third Party Advisory
- https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7fExploit
- https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221aPatch
- https://www.exploit-db.com/exploits/44973/Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2018/Jul/14Exploit, Mailing List, Third Party Advisory
- https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7fExploit
- https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221aPatch
- https://www.exploit-db.com/exploits/44973/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.