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| Rule General Information |
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| Release Date: | 2018-07-18 | |
| Rule Name: | SCAN ntop-ng Authentication Bypass via Session ID Guessing Vulnerability (CVE-2018-12520) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| 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. | |
| Impact: | An attacker could exploit this vulnerability to have unspecified effect. | |
| Affected OS: | Windows, Linux, FreeBSD, Solaris, Other Unix, Network Device, Mac OS, iOS, Android, Others | |
| Reference: | ExploitDB:44973 http://seclists.org/fulldisclosure/2018/Jul/14 https://gist.github.com/Psychotropos/3e8c047cada9b1fb716e6a014a428b7f https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221a |
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| Solutions |
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| The vendors have released upgrade patches to fix vulnerabilities, please visit: https://github.com/ntop/ntopng/commit/30610bda60cbfc058f90a1c0a17d0e8f4516221a |