TP-LINK TL-WVR/TL-WAR/TL-ER/TL-R uhttpd cgi-bin/luci HTTP Header File path traversal

Summaryinfo

A vulnerability categorized as problematic has been discovered in TP-LINK TL-WVR, TL-WAR, TL-ER and TL-R. Affected by this vulnerability is an unknown functionality in the library /usr/lib/lua/luci/controller/locale.lua of the file cgi-bin/luci of the component uhttpd. Executing a manipulation as part of HTTP Header can lead to path traversal (File). This vulnerability appears as CVE-2017-16959. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in TP-LINK TL-WVR, TL-WAR, TL-ER and TL-R (Router Operating System) (affected version unknown). It has been declared as problematic. This vulnerability affects an unknown functionality in the library /usr/lib/lua/luci/controller/locale.lua of the file cgi-bin/luci of the component uhttpd. The manipulation as part of a HTTP Header leads to a path traversal vulnerability (File). The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. CVE summarizes:

The locale feature in cgi-bin/luci on TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allows remote authenticated users to test for the existence of arbitrary files by making an operation=write;locale=%0d request, and then making an operation=read request with a crafted Accept-Language HTTP header, related to the set_sysinfo and get_sysinfo functions in /usr/lib/lua/luci/controller/locale.lua in uhttpd.

The bug was discovered 06/20/2018. The weakness was presented 11/27/2017 (Website). The advisory is available at github.com. This vulnerability was named CVE-2017-16959 since 11/27/2017. The attack can be initiated remotely. The successful exploitation needs a single authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-109979, VDB-109977 and VDB-109976 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• TP-LINK

Name

• TL-ER
• TL-R
• TL-WAR
• TL-WVR

License

• commercial

Website

• Vendor: https://www.tp-link.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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