TP-LINK WVR/WAR/ER pptp_server.lua new-mppeencryption command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
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6.7$0-$5k0.00

A vulnerability classified as critical was found in TP-LINK WVR, WAR and ER (Wireless LAN Software) (affected version unknown). Affected by this vulnerability is an unknown functionality of the file pptp_server.lua. The manipulation of the argument new-mppeencryption as part of a Variable leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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

The bug was discovered 01/10/2018. The weakness was presented 01/11/2018 as not defined posting (Bugtraq). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2017-15632 since 10/19/2017. The attack can be launched remotely. The successful exploitation needs a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

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.

See 111744, 111745, 111746 and 111747 for similar entries.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/19/2017 🔍
01/10/2018 +83 days 🔍
01/11/2018 +1 days 🔍
01/11/2018 +0 days 🔍
01/12/2018 +1 days 🔍
12/22/2019 +709 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2017-15632 (🔍)
See also: 🔍

Entryinfo

Created: 01/12/2018 08:02
Updated: 12/22/2019 14:18
Changes: 01/12/2018 08:02 (60), 12/22/2019 14:18 (1)
Complete: 🔍

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