DSA-2019-039: Dell Wyse Device Agent Buffer Overflow Vulnerability
Summary: Dell WES Wyse Device Agent versions prior to 14.1.2.9 and Dell Wyse ThinLinux HAgent versions prior to 5.4.55 00.10 contain a buffer overflow vulnerability. Dell recommends upgrading at the earliest opportunity and follow instructions in the release notes to enable security options that are relevant for their environment. ...
Impact
High
Details
Dell WES Wyse Device Agent versions prior to 14.1.2.9 and Dell Wyse ThinLinux HAgent versions prior to 5.4.55 00.10 contain a buffer overflow vulnerability. An unauthenticated attacker may potentially exploit this vulnerability to execute arbitrary code on the system with privileges of the FTP client by sending specially crafted input data to the affected system. The FTP code that contained the vulnerability has been removed.
In addition to the mitigation for this vulnerability, Wyse device agents listed and Dell ThinOS Wyse Device Agent version ThinOS 8.6 have been updated to provide additional features for customers to further secure their Wyse environment. For details on additional security enhancements that were introduced, please refer to release notes for each agent.
CVSSv3 Base Score 8.2 (AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L)
Dell WES Wyse Device Agent versions prior to 14.1.2.9 and Dell Wyse ThinLinux HAgent versions prior to 5.4.55 00.10 contain a buffer overflow vulnerability. An unauthenticated attacker may potentially exploit this vulnerability to execute arbitrary code on the system with privileges of the FTP client by sending specially crafted input data to the affected system. The FTP code that contained the vulnerability has been removed.
In addition to the mitigation for this vulnerability, Wyse device agents listed and Dell ThinOS Wyse Device Agent version ThinOS 8.6 have been updated to provide additional features for customers to further secure their Wyse environment. For details on additional security enhancements that were introduced, please refer to release notes for each agent.
CVSSv3 Base Score 8.2 (AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L)
Affected Products & Remediation
Affected Products:
- Dell WES Wyse Device Agent versions prior to 14.1.2.9
- Dell Wyse ThinLinux HAgent versions prior to 5.4.55 00.10
Remediation:
The below Dell Wyse device agents contain a resolution to this vulnerability.
- Dell WES Wyse Device Agent version 14.1.2.9
- Dell Wyse ThinLinux HAgent version 5.4.55 00.10
Note: Dell ThinOS Wyse Device Agent is not impacted by CVE-2019-3712 however includes additional features mentioned above starting from version 8.6.
Dell recommends upgrading at the earliest opportunity and follow instructions in the release notes to enable security options that are relevant for their environment.
Downloads for the applicable versions are available below:
- Dell Wyse Software Download Server:
- Dell WES Wyse Device Agent
- Dell Wyse ThinLinux HAgent
- Dell ThinOS Wyse Device Agent
- 3010 Thin Client Raw Image
- 3020 Thin Client Raw Image, Merlin Image
- 3030LT Thin Client Raw Image, Merlin Image
- 3030 LT Thin Client with PCoIP Raw Image, Merlin Image
- 3040 Thin Client Raw Image, Merlin Image
- 3040 Thin Client with PCoIP Raw Image, Merlin Image
- 5010 Thin Client Raw Image, Merlin Image
- 5010 Thin Client with PCoIP Raw Image, Merlin Image
- 5040 AIO Thin Client Raw Image
- 5040 AIO Thin Client Raw Image
- 5060 Thin Client Raw Image, Merlin Image
- 5060 Thin Client with PCoIP Raw Image, Merlin Image
- 5070 Thin Client Raw Image, Merlin Image
- 5070 Thin Client with PCoIP Raw Image, Merlin Image
- 7010 Thin Client Raw Image, Merlin Image
Affected Products:
- Dell WES Wyse Device Agent versions prior to 14.1.2.9
- Dell Wyse ThinLinux HAgent versions prior to 5.4.55 00.10
Remediation:
The below Dell Wyse device agents contain a resolution to this vulnerability.
- Dell WES Wyse Device Agent version 14.1.2.9
- Dell Wyse ThinLinux HAgent version 5.4.55 00.10
Note: Dell ThinOS Wyse Device Agent is not impacted by CVE-2019-3712 however includes additional features mentioned above starting from version 8.6.
Dell recommends upgrading at the earliest opportunity and follow instructions in the release notes to enable security options that are relevant for their environment.
Downloads for the applicable versions are available below:
- Dell Wyse Software Download Server:
- Dell WES Wyse Device Agent
- Dell Wyse ThinLinux HAgent
- Dell ThinOS Wyse Device Agent
- 3010 Thin Client Raw Image
- 3020 Thin Client Raw Image, Merlin Image
- 3030LT Thin Client Raw Image, Merlin Image
- 3030 LT Thin Client with PCoIP Raw Image, Merlin Image
- 3040 Thin Client Raw Image, Merlin Image
- 3040 Thin Client with PCoIP Raw Image, Merlin Image
- 5010 Thin Client Raw Image, Merlin Image
- 5010 Thin Client with PCoIP Raw Image, Merlin Image
- 5040 AIO Thin Client Raw Image
- 5040 AIO Thin Client Raw Image
- 5060 Thin Client Raw Image, Merlin Image
- 5060 Thin Client with PCoIP Raw Image, Merlin Image
- 5070 Thin Client Raw Image, Merlin Image
- 5070 Thin Client with PCoIP Raw Image, Merlin Image
- 7010 Thin Client Raw Image, Merlin Image
Acknowledgements
Dell would like to thank Jason Larsen of IOActive for reporting this vulnerability.
Dell recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. Dell disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall Dell or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Dell or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.