CVE-2018-12520

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 v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221a	Patch Third Party Advisory
https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7f	Third Party Advisory
http://seclists.org/fulldisclosure/2018/Jul/14	Mailing List Third Party Advisory
https://www.exploit-db.com/exploits/44973/	Exploit VDB Entry Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:ntop:ntopng:*:*:*:*:*:*:*:*

Information

Published : 2018-07-05 13:29

Updated : 2019-10-02 17:03

NVD link : CVE-2018-12520

Mitre link : CVE-2018-12520

JSON object : View

CWE

CWE-335

Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)

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Products Affected

ntop

ntopng

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