CVE-2017-5637

Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10,...

Design/Logic Flaw

Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10,...

CVE-2017-5637

CVE-2017-5637 affects Apache ZooKeeper prior to fixes in 3.4.10 and 3.5.3. The issue: two four-letter commands, wchp and wchc, are CPU-intensive and can cause a denial of service by overwhelming CPU on the server, rendering it unable to serve legitimate clients. Affected products/versions include...

OpenJDK: reading of unprocessed image data in JPEGImageReader (2D, 8169209)

It was discovered that the JPEGImageReader implementation in the 2D component of OpenJDK would, in certain cases, read all image data even if it was not used later. A specially crafted image could cause a Java application to temporarily use an excessive amount of CPU and memory...

Zookeeper 3.5.2 Client - Denial of Service

Zookeeper 3.5.2 Client - Denial of Service !/usr/bin/python Exploit Title: Zookeeper Client Denial Of Service Port 2181 Date: 2/7/2017 Exploit Author: Brandon Dennis Email: [email protected] Software Link: http://zookeeper.apache.org/releases.htmldownload Zookeeper Version: 3.5.2 Tested on:...

Zookeeper 3.5.2 Client - Denial of Service

!/usr/bin/python Exploit Title: Zookeeper Client Denial Of Service Port 2181 Date: 2/7/2017 Exploit Author: Brandon Dennis Email: [email protected] Software Link: http://zookeeper.apache.org/releases.htmldownload Zookeeper Version: 3.5.2 Tested on: Windows 2008 R2, Windows 2012 R2 x64 & x86...

PT-2017-4199 · Apache +2 · Apache Zookeeper +2

Name of the Vulnerable Software and Affected Versions: Apache ZooKeeper versions prior to 3.4.10 Apache ZooKeeper versions prior to 3.5.3 Description: The issue is related to the lack of authentication for a critical function in the implementation of the wchp/wchc command in Apache ZooKeeper, whi...

PXE client computers freeze during multithread network transfers in Windows Server 2012 R2

PXE client computers freeze during multithread network transfers in Windows Server 2012 R2 Symptoms When you deploy Windows Server 2012 R2 through Windows Deployment Services WDS Pre-Boot Execution Environment PXE, the server CPU usage spikes to 100%. In this situation, client computers may freez...

Remote Anonymous Denial of Service Vulnerability in OpenSSL (SSL Death Alert)

OpenSSL is an open source implementation of SSL used to implement strong encryption for network communications. OpenSSL is vulnerable to a remote anonymous denial of service vulnerability in that OpenSSL's implementation of the SSL/TLS protocol handshake allows a client to repeatedly send packets...

Ransomware Activity Spikes in March, Steadily increasing throughout 2016

UPDATE June 15, 2016: This post has been updated to include new data on ransomware activity, which is also now broken down by region. Cyber extortion for financial gain is typically carried out in one of two ways. The first method is a business disruption attack – a category we discussed at lengt...

Ransomware Activity Spikes in March, Steadily increasing throughout 2016

UPDATE June 15, 2016: This post has been updated to include new data on ransomware activity, which is also now broken down by region. Cyber extortion for financial gain is typically carried out in one of two ways. The first method is a business disruption attack – a category we discussed at lengt...

Researchers: PlugX More Prominent Than Ever

Existing in some form since 2008, the popular remote access tool PlugX has as notorious a history as any malware, but according to researchers the tool saw a spike of popularity in 2014 and is the go-to malware for many adversary groups. Many attacks, especially those occurring during the latter...

Spike DDoS Toolkit GET Flood Denial of Service

Spike DDos Toolkit has multiple DDoS payloads, including SYN flood, UDP flood, Domain Name System DNS query flood, and GET floods...

Large-Scale DDoS Attacks Continue to Spike

Although the average size of a given DDoS attack is going down, the number of attacks at the upper end of the scale is increasing, with researchers at Arbor Networks reporting more than 100 attacks of 100 Gbps in the first half of this year. In order for a DDoS attack to be effective, bad guys us...

Apache 1.2 Web Server DoS Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/2216/info Apache Web Server 1.2 and previous versions are subject to a denial of service. By requesting a malformed GET request composed of an unusually large number of '/' characters, an attacker can cause CPU usage to...

Microsoft NetMeeting 3.0.1 4.4.3385 Remote Desktop Sharing DoS Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/1798/info The Remote Desktop Sharing component of Microsoft NetMeeting for Windows NT 4.0 / 2000 does not properly handle a particular type of malformed input string sent over port 1720. CPU utilization can be caused to...

Ciscokits 1.0 TFTP Server File Name DoS

No description provided by source. !/usr/bin/python Title: Ciscokits 1.0 TFTP Long Filename DoS Author: Craig Freyman @cd1zz Date: July 22, 2011 Software Link: http://www.certificationkits.com/tftpserver/tftpserver.zip Tested on: Windows XP SP3 Vendor notified: July 22, 2010 - Vendor approved...

Old ASPCMS version of the Spike to get SHELL vulnerability-vulnerability warning-the black bar safety net

Find a background that... Then /admin/system/AspCmsSiteSetting. asp? action=saves Direct POST runMode=1&siteMode=1&siteHelp=%B1%BE%CD%F8%D5%BE%D2%F2%B3%CC%D0%F2%C9%FD%BC%B6%B9%D8%B1%D5%D6%D0&SwitchComments=1&SwitchCommentsStatus=1&switchFaq=0:Y=requestchr3...

ASPCMS old version spike get SHELL-vulnerability warning-the black bar safety net

/admin/system/AspCmsSiteSetting. asp? action=saves Direct POST: runMode=1&siteMode=1&siteHelp=%B1%BE%CD%F8%D5%BE%D2%F2%B3%CC%D0%F2%C9%FD%BC%B6%B9%D8%B1%D5%D6%D0&SwitchComments=1&SwitchCommentsStatus=1&switchFaq=0:Y=requestchr3...

SiteServer CMS UserCenter/login. aspx page the user name at sql injection-vulnerability warning-the black bar safety net

After testing spike the latest of the 3. Version 5 stieserver official website:www. siteserver. cn EXP: Direct access to the UserCenter/login. aspx The username at the input: 1 2 3'insert into bairongAdministratorUserName,Password,PasswordFormat,PasswordSalt...