TP-LINK TL-WA850RE 5 /data/wps.setup.json wps_setup_pin command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$0-$5k0.00

A vulnerability classified as critical was found in TP-LINK TL-WA850RE 5 (Router Operating System). Affected by this vulnerability is an unknown functionality of the file /data/wps.setup.json. The manipulation of the argument wps_setup_pin as part of a Shell Metacharacter 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 TL-WA850RE Wi-Fi Range Extender with hardware version 5 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the wps_setup_pin parameter to /data/wps.setup.json.

The bug was discovered 06/20/2018. The weakness was disclosed 06/23/2018 as EDB-ID 44912 as confirmed exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. This vulnerability is known as CVE-2018-12692 since 06/23/2018. The attack can be launched remotely. The successful exploitation needs a single authentication. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

A public exploit has been developed by yoresongo and been published immediately after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:data/wps.setup.json it is possible to find vulnerable targets with Google Hacking.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (44912). The entries 119829 and 119828 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
ATT&CK: T1202

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: yoresongo
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

06/20/2018 🔍
06/23/2018 +2 days 🔍
06/23/2018 +0 days 🔍
06/23/2018 +0 days 🔍
06/23/2018 +0 days 🔍
06/23/2018 +0 days 🔍
06/24/2018 +1 days 🔍
02/21/2020 +607 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: EDB-ID 44912
Status: Confirmed

CVE: CVE-2018-12692 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/24/2018 12:15
Updated: 02/21/2020 13:45
Changes: 06/24/2018 12:15 (69), 02/21/2020 13:45 (1)
Complete: 🔍

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