VDB-134283 · CVE-2019-3935 · Qualys 13484

Crestron AM-100/AM-101 Slie Show conference.cgi HTTP POST Request improper authentication

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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Crestron AM-100 and AM-101. The affected element is an unknown function of the file conference.cgi of the component Slie Show Handler. Performing a manipulation as part of HTTP POST Request results in improper authentication. This vulnerability was named CVE-2019-3935. The attack may be initiated remotely. There is no available exploit. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability, which was classified as critical, was found in Crestron AM-100 and AM-101. This affects some unknown functionality of the file conference.cgi of the component Slie Show Handler. The manipulation as part of a HTTP POST Request leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on 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 allows anyone to act as a moderator to a slide show via crafted HTTP POST requests to conference.cgi. A remote, unauthenticated attacker can use this vulnerability to start, stop, and disconnect active slideshows.

The bug was discovered 05/01/2019. The weakness was presented 04/30/2019. This vulnerability is uniquely identified as CVE-2019-3935 since 01/03/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

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

It is possible to mitigate the weakness by firewalling .

See VDB-134273, VDB-134274, VDB-134275 and VDB-134276 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

Crestron AM-100 1.6.0.2
Crestron AM-101 2.7.0.2

Productinfo

Vendor

Crestron

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

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-2019-3935 (🔍)
GCVE (CVE): GCVE-0-2019-3935
GCVE (VulDB): GCVE-100-134283
See also: 🔍

Entryinfo

Created: 05/01/2019 14:09
Updated: 09/11/2023 13:05
Changes: 05/01/2019 14:09 (58), 06/05/2020 11:58 (1), 09/11/2023 13:05 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.