Crestron AM-100/AM-101 HTTP Endpoint file_transfer.cgi System Command command injection

CVSS Meta Temp Score
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CTI Interest Score
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9.7$0-$5k0.00

A vulnerability was found in Crestron AM-100 and AM-101. It has been classified as very critical. This affects an unknown part of the file file_transfer.cgi of the component HTTP Endpoint. The manipulation as part of a System Command leads to a command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Crestron AM-100 firmware 1.6.0.2, Crestron AM-101 firmware 2.7.0.1, Barco wePresent WiPG-1000P firmware 2.3.0.10, Barco wePresent WiPG-1600W before firmware 2.4.1.19, Extron ShareLink 200/250 firmware 2.0.3.4, Teq AV IT WIPS710 firmware 1.1.0.7, SHARP PN-L703WA firmware 1.4.2.3, Optoma WPS-Pro firmware 1.0.0.5, Blackbox HD WPS firmware 1.0.0.5, InFocus LiteShow3 firmware 1.0.16, and InFocus LiteShow4 2.0.0.7 are vulnerable to command injection via the file_transfer.cgi HTTP endpoint. A remote, unauthenticated attacker can use this vulnerability to execute operating system commands as root.

The bug was discovered 05/01/2019. The weakness was disclosed 04/30/2019 (Website). The advisory is shared at exploit-db.com. This vulnerability is uniquely identified as CVE-2019-3929 since 01/03/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/06/2025). MITRE ATT&CK project uses the attack technique T1202 for this issue.

The exploit is shared for download at exploit-db.com. It is declared as highly functional. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13484 (Crestron AM-100 and AM-101 Multiple Vulnerabilities). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 04/15/2022 with a due date of 05/06/2022:

Apply updates per vendor instructions.

It is possible to mitigate the weakness by firewalling .

The entries VDB-134273, VDB-134274, VDB-134275 and VDB-134276 are pretty similar.

Affected

  • Crestron AM-100 1.6.0.2
  • Crestron AM-101 2.7.0.1
  • Barco wePresent WiPG-1000P 2.3.0.10
  • Barco wePresent WiPG-1600W 2.4.1
  • Extron ShareLink 200/Extron ShareLink 200 250 2.0.3.4
  • Teq AV IT WIPS710 1.1.0.7
  • SHARP PN-L703WA 1.4.2.3
  • Optoma WPS-Pro 1.0.0.5
  • Blackbox HD WPS 1.0.0.5
  • InFocus LiteShow3 1.0.16
  • InFocus LiteShow4 2.0.0.7

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.7

VulDB Base Score: 9.8
VulDB Temp Score: 9.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

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KEV Ransomware: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

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 🔍
02/06/2025 +2108 days 🔍

Sourcesinfo

Advisory: 152715
Status: Confirmed

CVE: CVE-2019-3929 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/01/2019 02:06 PM
Updated: 02/06/2025 11:41 PM
Changes: 05/01/2019 02:06 PM (59), 06/05/2020 11:16 AM (2), 09/11/2023 12:19 PM (5), 04/25/2024 05:34 PM (25), 08/20/2024 03:27 AM (3), 09/09/2024 10:30 PM (1), 02/06/2025 11:41 PM (1)
Complete: 🔍
Cache ID: 18:4A1:40

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