Igor Seletskiy

Saturday, 22 October 2016

Topic in: KernelCare News

KernelCare, Dirty Cow, systemtap and CentOS/RHEL/CL 5 - Important!!!

The systemtap scripts recommended by RedHat https://bugzilla.redhat.com/show_bug.cgi?id=1384344#c13 and many other people as workaround against CVE-2016-5195 (a.k.a DirtyCow) might be ineffective against new variations of the attack like this one:https://github.com/dirtycow/dirtycow.github.io/blob/master/pokemon.c[correction Oct 22, 7:04am: this pa...

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Igor Seletskiy

Tuesday, 30 August 2016

Hosting Industry Survey is now closed. Stand by for results.

Tags:

News

Topic in: CloudLinux OS Blog

Hosting Industry Survey is now closed. Stand by for results.

Update: Hosting Industry Survey results can be found here.This survey closed on Friday, September 9th. Once we compile all data, we will share the results of this survey with all respondents.Thanks!Igor

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Igor Seletskiy

Thursday, 11 August 2016

No single website can bring down your server

Tags:

Apache RLimits LVE limits

Topic in: CloudLinux OS Blog

No single website can bring down your server

Learn the difference between LVE limits & Apache RLimits What makes both shared hosting provider and its customers happy? Stable servers, of course!The problem is that even a single site can easily bring the servers to a halt by consuming its CPU, memory, and IO resources. The best way to improve your server stability is to limit and partition ...

Running InfiniBand hardware? Your servers might be vulnerable.

Recently a flaw was found in Linux kernel 2.6.32 that allows local users to escalate their privileges for servers with InfiniBand. If your servers have InfiniBand and you are running CentOS/RedHat/CloudLinux 6, Virtuozzo/OpenVZ, Proxmox 2.x WITHOUT KernelCare, you are vulnerable. We recommend you update and reboot your kernels to resolve...

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Igor Seletskiy

Wednesday, 29 June 2016

New Snapshot feature improvement coming to cPanel users

Tags:

FEATURE UPDATE cPanel lve-stats

Topic in: CloudLinux OS Blog

New Snapshot feature improvement coming to cPanel users

This week users will see an enhancement to the CPU and Concurrent Connection section in cPanel: HTTP Snapshots. In addition to Process Lists and Database Queries Snapshots already released in the beta repo, Snapshots of HTTP queries in the Apache web server becomes available as part of the beta release of lve-stats 2.CloudLinux OS new Apache module...

New vulnerability makes it easy to escape from the container

CVE-2016-4997 and CVE-2016-4998 were issued for a vulnerability that lets user inside container to escalate priveleges and escape the containment. The issue affects Virtuozzo, OpenVZ, LXC and Docker containers.If you are running KernelCare -- your servers are already patched, and safe. If you have yet to deploy KernelCare -- please, make sure ...

PHP 5.3? CVE 2015-6835 ... what a mess

Even though PHP 5.3 & 5.4 are still considered supported on CentOS -- sometimes it takes forever for CentOS/RHEL to fix a bug in there. CVE 2015-6835 is a perfect example. This particular bug came out of nowhere (well, people knew it was a bug, but they didn’t realize it was a huge security hole). Yet, once they did… it took days for the l...

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Igor Seletskiy

Tuesday, 14 June 2016

Hackers are using local DoS attack using CVE-2016-4581 against hosting provider

Tags:

CloudLinux OS 7

Topic in: KernelCare Blog Topic in: CloudLinux OS Blog

Hackers are using local DoS attack using CVE-2016-4581 against hosting provider

Distributions have yet to patch CVE-2016-4581 in CentOS/RHEL/CloudLinux 7 kernels. At the same time, the vulnerability is already known to be used in attacks against hosting providers to crash servers. We are working hard to release new CloudLinux 7 kernel that fixes this bug. Yet, if you want to be protected now, the fix is already avail...

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Igor Seletskiy

Thursday, 09 June 2016

What matters in hosting this year? WHD.USA reveals

Tags:

Event

Topic in: CloudLinux OS Blog

What matters in hosting this year? WHD.USA reveals

Did you make it to the WHD.USA event this year? If not, no worries. We'll gladly share some key notes and impressions of one of the brightest events of the hosting industry with you.The hosting business has seen significant changes over the last several years, in terms of new technologies competitive threats and user purchasing trends. The key tren...

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Igor Seletskiy

Monday, 23 May 2016

How to reduce downtime of managed servers - Liquid Web knows

Tags:

News

Topic in: KernelCare Blog

How to reduce downtime of managed servers - Liquid Web knows

Liquid Web rolls out KernelCare to 20K managed serversLiquid Web is one of the most well-respected companies in web hosting. Their 30,000+ customers rely on Liquid Web’s deep technical expertise and a variety of high-performance servers and hosting products. Rolling out KernelCare to 20,000 of their managed servers only attests to their commitment ...

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