glibc: svc_run() produces high cpu usage when accept() fails with EMFILE error

A denial of service flaw was found in the remote procedure call RPC implementation in glibc. A remote attacker able to open a large number of connections to an RPC service that is using the RPC implementation from glibc, could use this flaw to make that service use an excessive amount of CPU time...

glibc security and bug fix update

2.12-1.47.el62.5 - Avoid high cpu usage when accept fails with EMFILE 767692 2.12-1.47.el62.4 - Make implementation of ARENASTEST and ARENASMAX match documentation 769594 - Check malloc arena atomically 769594 2.12-1.47.el62.3 - Check values from TZ file header 767692 2.12-1.47.el62.2 - Correctly...

FreeBSD : Multiple implementations -- DoS via hash algorithm collision (91be81e7-3fea-11e1-afc7-2c4138874f7d)

oCERT reports : A variety of programming languages suffer from a denial-of-service DoS condition against storage functions of key/value pairs in hash data structures, the condition can be leveraged by exploiting predictable collisions in the underlying hashing algorithms. The issue finds particul...

redis-info NSE Script

Retrieves information such as version number and architecture from a Redis key-value store. Script Arguments creds.service, creds.global See the documentation for the creds library. Example Usage nmap -p 6379 --script redis-info Script Output PORT STATE SERVICE 6379/tcp open unknown | redis-info:...

CVE-2011-4815 ruby: hash table collisions CPU usage DoS (oCERT-2011-003)

Ruby aka CRuby before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service CPU consumption via crafted input to an application that maintains a hash table...

Multiple implementations -- DoS via hash algorithm collision

oCERT reports: A variety of programming languages suffer from a denial-of-service DoS condition against storage functions of key/value pairs in hash data structures, the condition can be leveraged by exploiting predictable collisions in the underlying hashing algorithms. The issue finds particula...

Fixed in Apache Tomcat 7.0.23

Important: Denial of service CVE-2012-0022 Analysis of the recent hash collision vulnerability identified unrelated inefficiencies with Apache Tomcat's handling of large numbers of parameters and parameter values. These inefficiencies could allow an attacker, via a specially crafted request, to...

RHEL 6 : php53 and php (RHSA-2011:1423)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2011:1423 advisory. PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A signedness issue was found in the way the PHP crypt...

php: DoS (excessive CPU consumption) by processing certain Zip archive files

Integer signedness error in zipstream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service CPU consumption via a malformed archive file that triggers errors in zipfread function calls...

kernel: taskstats: duplicate entries in listener mode can lead to DoS

The adddellistener function in kernel/taskstats.c in the Linux kernel 2.6.39.1 and earlier does not prevent multiple registrations of exit handlers, which allows local users to cause a denial of service memory and CPU consumption, and bypass the OOM Killer, via a crafted application...

Important: Red Hat Security Advisory: httpd and httpd22 security update

Updated httpd and httpd22 packages that fix one security issue are now available for JBoss Enterprise Web Server 1.0.2 for Red Hat Enterprise Linux 4, 5, and 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System CVSS...

httpd: multiple ranges DoS

The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service memory and CPU consumption via a Range header that expresses multiple overlapping ranges, as exploited in the wild in August 2011, a different...

Important: Red Hat Security Advisory: httpd security update

Updated httpd packages that fix one security issue are now available for Red Hat Enterprise Linux 3 Extended Life Cycle Support. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a...

Important: Red Hat Security Advisory: httpd security update

Updated httpd packages that fix one security issue are now available for Red Hat Enterprise Linux 5.3 Long Life, 5.6 Extended Update Support, and 6.0 Extended Update Support. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scori...

Zabbix < 1.8.6 Multiple Vulnerabilities

According to its self-reported version number, the instance of Zabbix listening on the remote host is earlier than 1.8.6. It could, therefore, be affected by multiple vulnerabilities. - An input validation error exists in the script 'acknow.php' that allows arbitrary script or HTML injection via...

httpd, mod_ssl security update

CentOS Errata and Security Advisory CESA-2011:1245 Updated httpd packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System CVS...

Apache HTTP Server Range Header DoS Vulnerability

Apache HTTP Server is prone to a denial of service DoS vulnerability. Copyright C 2011 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free...

Debian Security Advisory DSA 2237-1 (apr)

The remote host is missing an update to apr announced via advisory DSA 2237-1. This VT has been deprecated and merged into the VT SPDX-FileCopyrightText: 2011 E-Soft Inc. Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders...

Reported CPU Usage Values Differ in vCenter and Veeam ONE

Challenge The reported maximum, minimum, and average CPU usage values do not match between the vCenter and Veeam ONE. Cause How the Values Are Calculated in vSphere Client VMware calculates these values with Hyperthreading Technology enabled. The VMware vSphere client shows that "Hyperthreading" ...

DNS Invalid Compression Denial Of Service

!/usr/bin/perl DNS Invalid Compression attack coded by sipher www.elitter.net History: elitter.net provides Free UNIX shells and receives its more than fair amount of DDoS's and DoS attacks. 1 lovely day someone targeted our DNS services and managed to bring the system to 100% CPU usage. Goal:...