Fortinet FortiClient up to 5.2.3 IOCTL Call Fortishield.sys 0x220024/0x220028 access control
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.3 | $0-$5k | 0.00 |
A vulnerability was found in Fortinet FortiClient up to 5.2.3. It has been rated as problematic. This issue affects an unknown functionality of the file Fortishield.sys of the component IOCTL Call Handler. The manipulation of the argument 0x220024/0x220028
with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
The Fortishield.sys driver in Fortinet FortiClient before 5.2.4 allows local users to execute arbitrary code with kernel privileges by setting the callback function in a (1) 0x220024 or (2) 0x220028 ioctl call.
The weakness was released 09/03/2015 (Website). The advisory is shared at securitytracker.com. The identification of this vulnerability is CVE-2015-5736 since 08/04/2015. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.
A public exploit has been developed by sickness and been published 2 years after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 123870 (FortiClient Antivirus Multiple Security Vulnerabilities).
Upgrading to version 5.2.4 eliminates this vulnerability.
The vulnerability is also documented in the databases at Exploit-DB (41721), SecurityFocus (BID 76542†) and Vulnerability Center (SBV-53036†).
Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.9VulDB Meta Temp Score: 5.3
VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Access controlCWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: sickness
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Upgrade: FortiClient 5.2.4
Timeline
08/04/2015 🔍09/01/2015 🔍
09/01/2015 🔍
09/03/2015 🔍
09/03/2015 🔍
09/04/2015 🔍
09/30/2015 🔍
03/24/2017 🔍
03/24/2017 🔍
06/14/2022 🔍
Sources
Vendor: fortinet.comAdvisory: 133398⛔
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2015-5736 (🔍)
SecurityFocus: 76542 - FortiClient CVE-2015-5736 Local Privilege Escalation Vulnerability
SecurityTracker: 1033439
Vulnerability Center: 53036 - Fortinet FortiClient before 5.2.4 Local Privilege Escalation Vulnerability in Fortishield.sys Driver, High
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 09/04/2015 10:21Updated: 06/14/2022 09:20
Changes: 09/04/2015 10:21 (55), 10/29/2018 06:04 (17), 06/14/2022 09:20 (4)
Complete: 🔍
Cache ID: 18:57F:103
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