TP-LINK WVR/WAR/ER session_limits.lua new-ipgroup command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in TP-LINK WVR, WAR and ER. This issue affects some unknown processing of the file session_limits.lua. Such manipulation of the argument new-ipgroup as part of Variable leads to command injection. This vulnerability is traded as CVE-2017-15633. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TP-LINK WVR, WAR and ER (Wireless LAN Software) (affected version not known). Affected by this issue is some unknown functionality of the file session_limits.lua. The manipulation of the argument new-ipgroup as part of a Variable leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

TP-Link WVR, WAR and ER devices allow remote authenticated administrators to execute arbitrary commands via command injection in the new-ipgroup variable in the session_limits.lua file.

The bug was discovered 01/10/2018. The weakness was shared 01/11/2018 as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2017-15633 since 10/19/2017. The attack may be launched remotely. A simple authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

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

The entries VDB-111744, VDB-111745, VDB-111746 and VDB-111747 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Wireless LAN Software

Vendor

• TP-LINK

Name

• ER
• WAR
• WVR

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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