CVE-2015-2789
Description
Unquoted Windows search path vulnerability in the Foxit Cloud Safe Update Service in the Cloud plugin in Foxit Reader 6.1 through 7.0.6.1126 allows local users to gain privileges via a Trojan horse program in the %SYSTEMDRIVE% folder.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Foxit Reader 7.0.6.1126 - Unquoted Service Path Privilege Escalation
Foxit Reader 7.0.6.1126 Unquoted Service Path Elevation Of Privilege
Vendor: Foxit Software Incorporated
Product web page: http://www.foxitsoftware.com
Affected version: 7.0.6.1126 and 6.1
Summary: Foxit Reader is a small, lightning fast, and feature rich PDF
viewer which allows you to create (free PDF creation), open, view, sign,
and print any PDF file.
Desc: The application suffers from an unquoted search path issue impacting
the service 'FoxitCloudUpdateService' for Windows deployed as part of Foxit
Reader. This could potentially allow an authorized but non-privileged local
user to execute arbitrary code with elevated privileges on the system. A
successful attempt would require the local user to be able to insert their
code in the system root path undetected by the OS or other security applications
where it could potentially be executed during application startup or reboot.
If successful, the local user’s code would execute with the elevated privileges
of the application.
Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
Vulnerability discovered by Aljaz Ceru
aljaz@insec.si
Advisory ID: ZSL-2015-5235
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5235.php
Vendor: http://www.foxitsoftware.com/support/security_bulletins.php#FRD-25
17.02.2015
--
C:\Users\user>sc qc FoxitCloudUpdateService
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: FoxitCloudUpdateService
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files\Foxit Software\Foxit Reader\Foxit Cloud\FCUpdateService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Foxit Cloud Safe Update Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
C:\Users\user>Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| foxitsoftware | foxit_reader | 6.1 | |
| foxitsoftware | foxit_reader | 6.1.2 | |
| foxitsoftware | foxit_reader | 6.1.4 | |
| foxitsoftware | foxit_reader | 6.2 | |
| foxitsoftware | foxit_reader | 6.2.1 | |
| foxitsoftware | foxit_reader | 7.0 | |
| foxitsoftware | foxit_reader | 7.0.6 | |
References
- http://packetstormsecurity.com/files/130840/Foxit-Reader-7.0.6.1126-Privilege-Escalation.html
- http://www.exploit-db.com/exploits/36390
- http://www.foxitsoftware.com/support/security_bulletins.php#FRD-25
- http://www.securityfocus.com/bid/73432
- http://www.securitytracker.com/id/1031879
- http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5235.php
- http://packetstormsecurity.com/files/130840/Foxit-Reader-7.0.6.1126-Privilege-Escalation.html
- http://www.exploit-db.com/exploits/36390
- http://www.foxitsoftware.com/support/security_bulletins.php#FRD-25
- http://www.securityfocus.com/bid/73432
- http://www.securitytracker.com/id/1031879
- http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5235.php
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.