Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

[R3] Tenable Appliance Affected by NTP Vulnerabilities

Medium

Synopsis

The Tenable Appliance ships with the Network Time Protocol (NTP) service. Recently, several vulnerabilities were identified by a third-party and fixed by the vendor. Some of these issues may allow for remote code execution. The issues include:

  • NTP ntpd/ntp_crypto.c crypto_recv() Function Packet Handling Remote Stack Buffer Overflow
  • NTP ntpd/ntp_control.c configure() Function Packet Handling Remote Stack Buffer Overflow
  • NTP ntpd/ntp_control.c ctl_putdata() Function Packet Handling Remote Stack Buffer Overflow
  • NTP ntp-keygen MD5 Key Generation Weak RNG Seed MitM Issue
  • NTP Weak RSA Key Generation Modulus Unspecified Issue
  • NTP Extension Fields Missing vallen Validation Unspecified Issue
  • NTP Unspecified ::1 Spoofing Source IP ACL Bypass
  • NTP ntp_proto.c receive() Function Error Clause Missing return Statement Unspecified Weakness
  • NTP ntpd/ntp_config.c config_auth() Weak Default Key Generation

While the NTP service may allow remote traffic, best practices say that such an appliance should not be Internet accessible. If deployed in accordance with best practices, attacks would have to be conducted from an internal network.

Please note that Tenable strongly recommends that the appliance be installed on a subnet that is not Internet addressable.

Solution

Tenable has updated the Appliance to address these issues. If the Appliance is configured for automatic updating (by default, enabled on version 3.0.0 and later), simply click the Appliance 'update' button on the 'Updates' page. This will automatically download and install the patch. Customers still using an older 2.x.x release are strongly advised to upgrade to the latest version for new features and automatic updating.

This page contains information regarding security vulnerabilities that may impact Tenable's products. This may include issues specific to our software, or due to the use of third-party libraries within our software. Tenable strongly encourages users to ensure that they upgrade or apply relevant patches in a timely manner.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Try for Free Buy Now

Try Tenable.io

FREE FOR 30 DAYS

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Sign up now.

Buy Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

65 assets

$2,275

Buy Now

Try for Free Buy Now

Try Nessus Professional Free

FREE FOR 7 DAYS

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy Nessus Professional

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy a multi-year license and save. Add Advanced Support for access to phone, email, community and chat support 24 hours a day, 365 days a year. Full details here.

Try for Free Buy Now

Try Tenable.io Web Application Scanning

FREE FOR 30 DAYS

Enjoy full access to our latest web application scanning offering designed for modern applications as part of the Tenable.io platform. Safely scan your entire online portfolio for vulnerabilities with a high degree of accuracy without heavy manual effort or disruption to critical web applications. Sign up now.

Buy Tenable.io Web Application Scanning

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

5 FQDNs

$3,578

Buy Now

Try for Free Contact Sales

Try Tenable.io Container Security

FREE FOR 30 DAYS

Enjoy full access to the only container security offering integrated into a vulnerability management platform. Monitor container images for vulnerabilities, malware and policy violations. Integrate with continuous integration and continuous deployment (CI/CD) systems to support DevOps practices, strengthen security and support enterprise policy compliance.

Buy Tenable.io Container Security

Tenable.io Container Security seamlessly and securely enables DevOps processes by providing visibility into the security of container images – including vulnerabilities, malware and policy violations – through integration with the build process.

Learn More about Industrial Security

Get a Demo of Tenable.sc

Please fill out the form below with your contact information and a sales representative will contact you shortly to schedule a demo. You may also include a short comment (limited to 255 characters). Please note that fields with asterisks (*) are mandatory.

Try for Free Contact Sales

Try Tenable Lumin

FREE FOR 30 DAYS

Visualize and explore your Cyber Exposure, track risk reduction over time and benchmark against your peers with Tenable Lumin.

Buy Tenable Lumin

Contact a Sales Representative to see how Lumin can help you gain insight across your entire organization and manage cyber risk.

Learn More about Indegy