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.

Vulnerabilities / Threats

5/13/2019
06:15 PM
50%
50%

Thrangrycat Claws Cisco Customer Security

A linked pair of vulnerabilities could allow an attacker to take over many different types of Cisco networking components.

A recently discovered flaw in Cisco IOS XE software with the HTTP Server feature enabled could allow a user with stolen credentials to execute code on a Cisco networking device with root privileges — a significant privilege escalation attack. Dubbed Thrangrycat by the researchers at Red Balloon Security who discovered the linked pair of vulnerabilities, these flaws, designated CVE-2019-1862, would allow an attacker to first bypass the Cisco Trust Anchor module (TAm), then conduct a remote code injection with root execution.

In the first exploit, an attacker would manipulate the bitstream responsible for defining the Field-Programmable Gate Array (FPGA) that holds the code for TAm — code that executes from the FPGA hardware at boot and is designed to insulate the device from boot-time exploits. In addition to bypassing secure boot, the attack code locks all future software updates out of the TAm.

Once the TAm is compromised, the attacker can log into the device and execute code at root privilege. Cisco has released a firmware update that patches the vulnerability, and acknowledges that there are no operational work-arounds to Thrangrycat.

The company plans to present details of the vulnerability and exploit at Black Hat USA 2019 in Las Vegas.

For more, read here and here

 

 

 

Join Dark Reading LIVE for two cybersecurity summits at Interop 2019. Learn from the industry's most knowledgeable IT security experts. Check out the Interop agenda here.

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
97% of Americans Can't Ace a Basic Security Test
Steve Zurier, Contributing Writer,  5/20/2019
How a Manufacturing Firm Recovered from a Devastating Ransomware Attack
Kelly Jackson Higgins, Executive Editor at Dark Reading,  5/20/2019
Why AI Will Create Far More Jobs Than It Replaces
John DiLullo, CEO, Lastline,  5/14/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: Talk about vendor lock in...
Current Issue
Building and Managing an IT Security Operations Program
As cyber threats grow, many organizations are building security operations centers (SOCs) to improve their defenses. In this Tech Digest you will learn tips on how to get the most out of a SOC in your organization - and what to do if you can't afford to build one.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-11816
PUBLISHED: 2019-05-20
Incorrect access control in the WebUI in OPNsense before version 19.1.8, and pfsense before 2.4.4-p3 allows remote authenticated users to escalate privileges to administrator via a specially crafted request.
CVE-2019-10076
PUBLISHED: 2019-05-20
A carefully crafted malicious attachment could trigger an XSS vulnerability on Apache JSPWiki 2.9.0 to 2.11.0.M3, which could lead to session hijacking.
CVE-2019-10077
PUBLISHED: 2019-05-20
A carefully crafted InterWiki link could trigger an XSS vulnerability on Apache JSPWiki 2.9.0 to 2.11.0.M3, which could lead to session hijacking.
CVE-2019-10078
PUBLISHED: 2019-05-20
A carefully crafted plugin link invocation could trigger an XSS vulnerability on Apache JSPWiki 2.9.0 to 2.11.0.M3, which could lead to session hijacking. Initial reporting indicated ReferredPagesPlugin, but further analysis showed that multiple plugins were vulnerable.
CVE-2019-12239
PUBLISHED: 2019-05-20
The WP Booking System plugin 1.5.1 for WordPress has no CSRF protection, which allows attackers to reach certain SQL injection issues that require administrative access.