National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-18486 Detail

Current Description

Jitbit Helpdesk before 9.0.3 allows remote attackers to escalate privileges because of mishandling of the User/AutoLogin userHash parameter. By inspecting the token value provided in a password reset link, a user can leverage a weak PRNG to recover the shared secret used by the server for remote authentication. The shared secret can be used to escalate privileges by forging new tokens for any user. These tokens can be used to automatically log in as the affected user.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 1.2


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://github.com/Kc57/JitBit_Helpdesk_Auth_Bypass Exploit Third Party Advisory
https://packetstormsecurity.com/files/144334/JitBit-Helpdesk-9.0.2-Broken-Authentication.html Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/42776 Exploit Third Party Advisory VDB Entry
https://www.trustedsec.com/2017/09/full-disclosure-jitbit-helpdesk-authentication-bypass-0-day Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Insufficient Entropy in PRNG (CWE-332)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:jitbit:helpdesk:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
9.0.3


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-18486
NVD Published Date:
08/09/2019
NVD Last Modified:
08/19/2019