Crestron AM-100/AM-101 libAwgCgi.so PARSERtoCHAR memory corruption
|CVSS Meta Temp Score|
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
|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|
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
A vulnerability was found in Crestron AM-100 and AM-101. It has been declared as very critical. This vulnerability affects the function
PARSERtoCHAR of the file libAwgCgi.so. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
The Crestron AM-100 firmware 184.108.40.206, Crestron AM-101 firmware 220.127.116.11, Barco wePresent WiPG-1000P firmware 18.104.22.168, Barco wePresent WiPG-1600W before firmware 22.214.171.124, Extron ShareLink 200/250 firmware 126.96.36.199, Teq AV IT WIPS710 firmware 188.8.131.52, SHARP PN-L703WA firmware 184.108.40.206, Optoma WPS-Pro firmware 220.127.116.11, Blackbox HD WPS firmware 18.104.22.168, InFocus LiteShow3 firmware 1.0.16, and InFocus LiteShow4 22.214.171.124 are vulnerable to a stack buffer overflow in libAwgCgi.so's PARSERtoCHAR function. A remote, unauthenticated attacker can use this vulnerability to execute arbitrary code as root via a crafted request to the return.cgi endpoint.
The bug was discovered 05/01/2019. The weakness was presented 04/30/2019. This vulnerability was named CVE-2019-3930 since 01/03/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/05/2020).
The commercial vulnerability scanner Qualys is able to test this issue with plugin 13484 (Crestron AM-100 and AM-101 Multiple Vulnerabilities).
Proper firewalling of is able to address this issue.
- Crestron AM-100 126.96.36.199
- Crestron AM-101 188.8.131.52
- Barco wePresent WiPG-1000P 184.108.40.206
- Barco wePresent WiPG-1600W 2.4.1
- Extron ShareLink 200/Extron ShareLink 200 250 220.127.116.11
- Teq AV IT WIPS710 18.104.22.168
- SHARP PN-L703WA 22.214.171.124
- Optoma WPS-Pro 126.96.36.199
- Blackbox HD WPS 188.8.131.52
- InFocus LiteShow3 1.0.16
- InFocus LiteShow4 184.108.40.206
CVSSv3VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.7
VulDB Base Score: 10.0
VulDB Temp Score: 9.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
ExploitingClass: Memory corruption
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat IntelligenceInterest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
0-Day Time: 🔍
04/30/2019 +117 days 🔍
05/01/2019 +1 days 🔍
05/01/2019 +0 days 🔍
06/05/2020 +401 days 🔍
CVE: CVE-2019-3930 (🔍)
See also: 🔍
EntryCreated: 05/01/2019 02:07 PM
Updated: 06/05/2020 11:24 AM
Changes: (1) vulnerability_discoverydate
Do you want to use VulDB in your project?
Use the official API to access entries easily!