Unpatched DNS Related Vulnerability Affects a Wide Range of IoT Devices

Cybersecurity researchers have disclosed an unpatched security vulnerability that could pose a serious risk to IoT products. The issue, which was originally reported in September 2021, affects the Domain Name System DNS implementation of two popular C libraries called uClibc and uClibc-ng that ar...

CVE-2021-20322

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

Design/Logic Flaw

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

CVE-2021-20322

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

CVE-2021-20322: Use of Insufficiently Random Values

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

AlmaLinux 8 : kernel (ALSA-2021:0558)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:0558 advisory. - A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor...

CVE-2021-31228

An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests without sniffing the specific request. Data is...

CVE-2021-31228: Use of Insufficiently Random Values

An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests without sniffing the specific request. Data is...

SUSE: Security Advisory (SUSE-SU-2020:3507-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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 ifdescription...

kernel: ICMP rate limiting can be used for DNS poisoning attack

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentialit...

PT-2021-3981

Name of the Vulnerable Software and Affected Versions HCC embedded InterNiche version 4.0.1 Description The issue allows an attacker to predict a DNS query's source port, enabling them to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests. This is...

CVE-2021-25810

Cross site Scripting XSS vulnerability in MERCUSYS Mercury X18G 1.0.5 devices, via crafted values to the 'srcdportstart', 'srcdportend', and 'destport' parameters...

dnsmasq 安全漏洞

dnsmasq is a lightweight DNS forwarding and DHCP and TFTP server written in C. It can be used as a server to forward DNS, DHCP, and TFTP. A security vulnerability exists in dnsmasq that stems from the random source port behavior being disabled, allowing caching attacks...

dnsmasq -- cache poisoning vulnerability in certain configurations

Simon Kelley reports: In configurations where the forwarding server address contains an @ character for specifying a sending interface or source address, the random source port behavior was disabled, making cache poisoning attacks possible. This only affects configurations of the form...

Oracle Linux 7 : kernel (ELSA-2021-0856)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0856 advisory. - pinctrl devicetree: Avoid taking direct reference to device name string Aristeu Rozanski 1922902 CVE-2020-0427 - pinctrl Delete an error message...

kernel: ICMP rate limiting can be used for DNS poisoning attack

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentialit...

kernel: ICMP rate limiting can be used for DNS poisoning attack

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentialit...

kernel: ICMP rate limiting can be used for DNS poisoning attack

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentialit...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9007)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9007 advisory. - xen-blkback: set ring-xenblkd to NULL after kthreadstop Pawel Wieczorkiewicz Orabug: 32260252 CVE-2020-29569 - xenbus/xenbusbackend: Disallow...

SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3764-1)

The SUSE Linux Enterprise 15 SP2 RT kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2020-15436: Fixed a use after free vulnerability in fs/blockdev.c which could have allowed local users to gain privileges or cause a denial of service...