Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Cloud

2/6/2020
05:10 PM
Dark Reading
Dark Reading
Products and Releases
50%
50%

One out of Every Five Companies Failed to Fix Vulnerability in the Citrix Software, Making the Internal Network Breachable within a Minute

Framingham, MA (February 6, 2020) -- A month and a half after Positive Technologies released its overview of a critical vulnerability in Citrix software that was endangering 80,000 companies in 158 countries, one out of every five companies have still not taken any action to fix this vulnerability. This is evident from threat intelligence from Positive Technologies.

Critical vulnerability CVE-2019-19781 in Citrix Application Delivery Controller (NetScaler ADC)[1] and Citrix Gateway (NetScaler Gateway) was discovered in December by Positive Technologies expert Mikhail Klyuchnikov. According to Positive Technologies data as of the end of 2019, the greatest number of potentially vulnerable organizations is located in the USA (over 38% of all vulnerable organizations), as well as in Germany, Great Britain, the Netherlands, and Australia. On January 8, 2020, an exploit was released. It allows a potential attacker to perform automatic attacks against companies that failed to fix the vulnerability.

“The Citrix developers planned to resolve the issue on January 27 through January 31, but released a series of patches for various product versions a week before that. The necessary update must be installed as soon as possible. Until then, follow the security recommendations by Citrix, available since the information about the vulnerability was released,” says Alexei Novikov, Director of PT Expert Security Center.

Overall, the vulnerability is being fixed quickly, but 19% of companies are still at risk. The countries with the greatest numbers of vulnerable companies currently include Brazil (43% of all companies where the vulnerability was originally detected), China (39%), Russia (35%), France (34%), Italy (33%), and Spain (25%). The USA, Great Britain, and Australia are protecting themselves quicker, but they each have 21% of companies still using vulnerable devices without any protection measures.

Once again, if the vulnerability is exploited, attackers obtain direct access to the company's local network from the Internet. This attack does not require access to any accounts, and therefore can be performed by any external attacker.

To fend off potential attacks, companies can use web application firewalls. For example, PT Application Firewall can detect this attack out of the box. The system must be set to block all dangerous requests to ensure protection in real time. Considering how long this vulnerability has been around (since the first vulnerable version of the software was released in 2014), detecting potential exploitation of this vulnerability (and, therefore, infrastructure compromise) retrospectively becomes just as important. Starting December 18, 2019, PT Network Attack Discoveryusers can use special rules detecting attempts to exploit this vulnerability online.

 

Positive Technologies is a leading global provider of enterprise security solutions for vulnerability and compliance management, incident and threat analysis, and application protection. Commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on Industrial Control System, Banking, Telecom, Web Application, and ERP security, supported by recognition from the analyst community. Read more at ptsecurity.com, facebook.com/PositiveTechnologies, facebook.com/PHDays, twitter.com/ptsecurity

 

 

CONTACT:  

Paula Dunne

CONTOS DUNNE COMMUNICATIONS 

+1-408-893-8750 (m)

+1-408-776-1400 (o)

[email protected]

 

 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
News
Inside the Ransomware Campaigns Targeting Exchange Servers
Kelly Sheridan, Staff Editor, Dark Reading,  4/2/2021
Commentary
Beyond MITRE ATT&CK: The Case for a New Cyber Kill Chain
Rik Turner, Principal Analyst, Infrastructure Solutions, Omdia,  3/30/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-3243
PUBLISHED: 2021-04-15
Wfilter ICF 5.0.117 contains a cross-site scripting (XSS) vulnerability. An attacker in the same LAN can craft a packet with a malicious User-Agent header to inject a payload in its logs, where an attacker can take over the system by through its plugin-running function.
CVE-2021-29448
PUBLISHED: 2021-04-15
Pi-hole is a Linux network-level advertisement and Internet tracker blocking application. The Stored XSS exists in the Pi-hole Admin portal, which can be exploited by the malicious actor with the network access to DNS server. See the referenced GitHub security advisory for patch details.
CVE-2021-30138
PUBLISHED: 2021-04-15
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.
CVE-2021-27112
PUBLISHED: 2021-04-15
LightCMS v1.3.5 contains a remote code execution vulnerability in /app/Http/Controllers/Admin/NEditorController.php during the downloading of external images.
CVE-2021-20288
PUBLISHED: 2021-04-15
An authentication flaw was found in ceph in versions before 14.2.20. When the monitor handles CEPHX_GET_AUTH_SESSION_KEY requests, it doesn't sanitize other_keys, allowing key reuse. An attacker who can request a global_id can exploit the ability of any user to request a global_id previously associa...