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Schneider Electric Pelco VideoXpert Privilege Escalations

2017-07-10 16:45
Title: Schneider Electric Pelco VideoXpert Privilege Escalations
Advisory ID: ZSL-2017-5418
Type: Local
Impact: Privilege Escalation
Risk: (3/5)
Release Date: 10.07.2017
Summary
VideoXpert is a video management solution designed forscalability, fitting the needs surveillance operations of any size.VideoXpert Ultimate can also aggregate other VideoXpert systems,tying multiple video management systems into a single interface.
Description
The application is vulnerable to an elevation of privilegesvulnerability which can be used by a simple user that can changethe executable file with a binary of choice. The vulnerability existdue to the improper permissions, with the 'F' flag (full) for the'Users' group, for several binary files. The service is installedby default to start on system boot with LocalSystem privileges.Attackers can replace the binary with their rootkit, and on rebootthey get SYSTEM privileges.

VideoXpert services also suffer from an unquoted search path issueimpacting the 'VideoXpert Core' and 'VideoXpert Exports' servicesfor Windows deployed as part of the VideoXpert Setup bundle. Thiscould potentially allow an authorized but non-privileged local userto execute arbitrary code with elevated privileges on the system. A successful attempt would require the local user to be able to inserttheir code in the system root path undetected by the OS or other securityapplications where it could potentially be executed during applicationstartup or reboot. If successful, the local user’s code would executewith the elevated privileges of the application.
Vendor
Schneider Electric SE - https://www.pelco.com
Affected Version
Core Software 1.12.105
Media Gateway Software 1.12.26
Exports 1.12
Tested On
Microsoft Windows 7 Professional SP1 (EN)
Vendor Status
[05.04.2017] Vulnerabilities discovered.
[28.04.2017] Vendor contacted.
[09.07.2017] No response from the vendor.
[10.07.2017] Public security advisory released.
PoC
pelcovideoxpert_eop.txt
Credits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>
References
N/A
Changelog
[10.07.2017] - Initial release
Contact
Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk


Source: php.8145-7102-LSZ/seitilibarenluv/ne/km.ecneicsorez.www

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