USN-4041-1: Linux kernel update

USN-4017-1 fixed vulnerabilities in the Linux kernel for Ubuntu. Unfortunately, the update introduced a regression that interfered with networking applications that setup very low SOSNDBUF values. This update fixes the problem. We apologize for the inconvenience. Jonathan Looney discovered that t...

Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect Watson Explorer, Watson Content Analytics and Watson Explorer Content Analytics Studio (CVE-2018-1890, CVE-2019-2426)

Summary There are multiple vulnerabilities in IBM® Runtime Environment Java™ Version 8 and Version 7 used by Watson Explorer, Watson Content Analytics and Watson Explorer Content Analytics Studio. Watson Explorer, Watson Content Analytics and Watson Explorer Content Analytics Studio have addresse...

Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2019-052)

According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - A double-free can happen in idrremoveall in lib/idr.c in the Linux kernel. An unprivileged local attacke...

Greenbone OS - Kernel Denial of Service Vulnerabilities (Jun 2019)

The Kernel in Greenbone OS is prone to multiple denial of service vulnerabilities. SPDX-FileCopyrightText: 2019 Greenbone AG 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-only CPE =...

Multiple TCP Selective Acknowledgement (SACK) and Maximum Segment Size (MSS) networking vulnerabilities may cause denial-of-service conditions in Linux and FreeBSD kernels

Overview Multiple TCP Selective Acknowledgement SACK and Maximum Segment Size MSS networking vulnerabilities may cause denial-of-service conditions in Linux and FreeBSD kernels. Description CVE-2019-11477: SACK Panic Linux = 2.6.29. A sequence of specifically crafted selective acknowledgements SA...

Important kernel security update: Virtuozzo ReadyKernel patch 82.0 for all supported Virtuozzo 7.0 and Virtuozzo Infrastructure Platform 2.5 kernels

The cumulative Virtuozzo ReadyKernel patch was updated with security fixes. The patch applies to all supported kernels of Virtuozzo 7.0 and Virtuozzo Infrastructure Platform 2.5. Vulnerability id: CVE-2019-11477 An integer overflow was found in the way the Linux kernel's networking subsystem...

Multiple Vulnerabilities Affecting Linux, FreeBSD Kernels

The CERT Coordination Center CERT/CC has released information on TCP networking vulnerabilities affecting Linux and FreeBSD kernels. A remote attacker could exploit these vulnerabilities to cause a denial-of-service condition. The Cybersecurity and Infrastructure Security Agency CISA encourages...

bpftool, kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2019:1481 An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2019:1488 An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

Multiple Qualcomm Products Resource Management Error Vulnerability (CNVD-2019-18594)

Qualcomm MDM9206 and others are products of Qualcomm Incorporated.The MDM9206 is a central processing unit CPU product.The MDM9607 is a central processing unit CPU product.The SDX20 is a modem.The MDM9206 is a central processing unit CPU product.The MDM9607 is a central processing unit CPU...

Netperf 2.6.0 - Stack-Based Buffer Overflow Exploit

Exploit Author: Juan Sacco - http://exploitpack.com Tested on: Kali i686 GNU/Linux Description: Netperf 2.6.0 s a benchmark tool than developed by Helett Packard that can be used to measure the performance of many different types of networking. It provides tests for both unidirectional troughput...

Check Point Response to CVE-2019-11477, CVE-2019-11478, CVE-2019-11479 - TCP SACK PANIC Linux Kernel vulnerabilities

Cause CVE-2019-11477: The Linux kernel is vulnerable to an integer overflow in the 16-bit width of TCPSKBCBskb- tcpgsosegs. A remote attacker could exploit this to crash the system and create a Denial Of Service. CVE-2019-11478: The Linux kernel is vulnerable to a flaw that allows attackers to se...

kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP segments. If the Maximum Segment Size MSS of a TCP connection was set to low values, such as 48 bytes, it can leave as little as 8 bytes for the user data, which significantly increas...

kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP segments. If the Maximum Segment Size MSS of a TCP connection was set to low values, such as 48 bytes, it can leave as little as 8 bytes for the user data, which significantly increas...

kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP segments. If the Maximum Segment Size MSS of a TCP connection was set to low values, such as 48 bytes, it can leave as little as 8 bytes for the user data, which significantly increas...

Important: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment SACK segments. While processing SACK segments, the Linux kernel's socket buffer SKB data structure becomes fragmented, which leads to increased resource...

kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP segments. If the Maximum Segment Size MSS of a TCP connection was set to low values, such as 48 bytes, it can leave as little as 8 bytes for the user data, which significantly increas...

Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment SACK segments. While processing SACK segments, the Linux kernel's socket buffer SKB data structure becomes fragmented, which leads to increased resource...

Netperf 2.6.0 - Stack-Based Buffer Overflow

Netperf 2.6.0 - Stack-Based Buffer Overflow Exploit Author: Juan Sacco - http://exploitpack.com Tested on: Kali i686 GNU/Linux Description: Netperf 2.6.0 s a benchmark tool than developed by Helett Packard that can be used to measure the performance of many different types of networking. It...