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

3/7/2018
12:24 PM
50%
50%

Memcached DDoS Attack: Kill Switch, New Details Disclosed

Corero shares a kill switch for the Memcached vulnerability and reports the flaw is more extensive than originally believed.

Corero Network Security has disclosed a "kill switch" for the Memcached vulnerability to national security agencies and shared new evidence indicating the flaw is more dangerous than previously believed. For the first time, threat actors have been exploiting unsecured Memcached servers to launch distributed denial-of-service (DDoS) attacks on target businesses.

Memcached is an open-source memory caching system that stores data in RAM to accelerate access times. It was not built for Internet access; users don't have to authenticate. This exploit lets attackers create spoof requests and boost attacks up to 50,000 times.

The attacks, which hit businesses including GitHub, started in late February. German DDoS mitigation service provider Link11 was among the first to report the new activity, which included UDP attacks using Memcached servers to spread. Link11 found 5,000 vulnerable Memcached servers on the public internet.

Corero researchers have discovered that any exposed Memcached server that can be leveraged for a DDoS attack can also be tricked into sharing user data it has cached from its local network or host. Because Memcached servers don't require authentication, anything added to a vulnerable server can be stolen. Attackers can also modify data and reinsert it in the cache without owners' knowledge.

The "kill switch" sends a command back to the attackers' server to suppress the current DDoS exploitation. This invalidates the cache of a vulnerable server, including attackers' potentially malicious payload. It has been effectively tested on live attacking servers, Corero reports.

Read more details here.

 

 

 

Black Hat Asia returns to Singapore with hands-on technical Trainings, cutting-edge Briefings, Arsenal open-source tool demonstrations, top-tier solutions and service providers in the Business Hall. Click for information on the conference and to register.

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
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Edge-DRsplash-10-edge-articles
7 Old IT Things Every New InfoSec Pro Should Know
Joan Goodchild, Staff Editor,  4/20/2021
News
Cloud-Native Businesses Struggle With Security
Robert Lemos, Contributing Writer,  5/6/2021
Commentary
Defending Against Web Scraping Attacks
Rob Simon, Principal Security Consultant at TrustedSec,  5/7/2021
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-2021-23134
PUBLISHED: 2021-05-12
Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.2 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.
CVE-2021-23135
PUBLISHED: 2021-05-12
Exposure of System Data to an Unauthorized Control Sphere vulnerability in web UI of Argo CD allows attacker to cause leaked secret data into web UI error messages and logs. This issue affects Argo CD 1.8 versions prior to 1.8.7; 1.7 versions prior to 1.7.14.
CVE-2020-28722
PUBLISHED: 2021-05-12
Deskpro Cloud Platform and on-premise 2020.2.3.48207 from 2020-07-30 contains a cross-site scripting (XSS) vulnerability that can lead to an account takeover via custom email templates.
CVE-2020-18165
PUBLISHED: 2021-05-12
Cross Site Scripting (XSS) in LAOBANCMS v2.0 allows remote attackers to execute arbitrary code by injecting commands into the "Website SEO Keywords" field on the page "admin/info.php?shuyu".
CVE-2020-19275
PUBLISHED: 2021-05-12
An Information Disclosure vulnerability exists in dhcms 2017-09-18 when entering invalid characters after the normal interface, which causes an error that will leak the physical path.