VDB-134279 · CVE-2019-3931 · Qualys 13484

Crestron AM-100/AM-101 cURL return.cgi HTTP Requests injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.7$0-$5k0.00

A vulnerability was found in Crestron AM-100 and AM-101. It has been rated as critical. This issue affects an unknown code block of the file return.cgi of the component cURL. The manipulation as part of a HTTP Requests leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Crestron AM-100 with firmware 1.6.0.2 and AM-101 with firmware 2.7.0.2 are vulnerable to argumention injection to the curl binary via crafted HTTP requests to return.cgi. A remote, authenticated attacker can use this vulnerability to upload files to the device and ultimately execute code as root.

The bug was discovered 05/01/2019. The weakness was shared 04/30/2019. The identification of this vulnerability is CVE-2019-3931 since 01/03/2019. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 13484 (Crestron AM-100 and AM-101 Multiple Vulnerabilities).

Addressing this vulnerability is possible by firewalling .

Affected

  • Crestron AM-100 1.6.0.2
  • Crestron AM-101 2.7.0.2

Productinfo

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: 8.8
VulDB Meta Temp Score: 8.7

VulDB Base Score: 8.8
VulDB Temp Score: 8.6
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: Injection
CWE: 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: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2019 🔍
04/30/2019 +117 days 🔍
05/01/2019 +1 days 🔍
05/01/2019 +0 days 🔍
09/11/2023 +1594 days 🔍

Sourcesinfo

Advisory: tenable.com
Status: Confirmed

CVE: CVE-2019-3931 (🔍)

Entryinfo

Created: 05/01/2019 02:07 PM
Updated: 09/11/2023 12:33 PM
Changes: 05/01/2019 02:07 PM (58), 06/05/2020 11:29 AM (1), 09/11/2023 12:33 PM (4)
Complete: 🔍
Cache ID: 3:04E:40

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