CVE-2020-25111

An issue was discovered in the IPv6 stack in Contiki through 3.0. There is an insufficient check for the IPv6 header length. This leads to Denial-of-Service and potential Remote Code Execution via a crafted ICMPv6 echo packet...

CVE-2020-17443

CVE-2020-17443 affects picoTCP 1.7.0 (and picoTCP-NG) where ICMPv6 echo reply creation does not validate that the request header is at least 8 bytes. If a request is shorter than 8 bytes, an integer wraparound occurs when sizing the echo reply, causing memory corruption and potential DoS in pico_...

CVE-2020-17443

An issue was discovered in picoTCP 1.7.0. The code for creating an ICMPv6 echo replies doesn't check whether the ICMPv6 echo request packet's size is shorter than 8 bytes. If the size of the incoming ICMPv6 request packet is shorter than this, the operation that calculates the size of the ICMPv6...

CVE-2020-17441

An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6 payload length field is equal to the actual size of the payload, which leads to an Out-of-Bounds read during the ICMPv6 checksum calculation, resulting in either Denial-of-Service...

CVE-2020-17441

CVE-2020-17441 affects picoTCP 1.7.0, specifically the IPv6 processing code in pico_ipv6_extension_headers and pico_checksum_adder (pico_ipv6.c, pico_frame.c). The issue arises from not validating the IPv6 payload length against the actual payload when computing the ICMPv6 checksum, causing an ou...

uIP-Contiki-OS 缓冲区错误漏洞

Contiki is an open source, highly portable, networked multitasking operating system for memory-constrained systems. A denial of service and remote code execution vulnerability exists in the IPv6 stack in Contiki 3.0 and earlier versions. The vulnerability stems from inconsistent checking of the...

FreeBSD : FreeBSD -- ICMPv6 use-after-free in error message handling (8eed0c5c-3482-11eb-b87a-901b0ef719ab)

When an ICMPv6 error message is received, the FreeBSD ICMPv6 stack may extract information from the message to hand to upper-layer protocols. As a part of this operation, it may parse IPv6 header options from a packet embedded in the ICMPv6 message. The handler for a routing option caches a point...

FreeBSD -- ICMPv6 use-after-free in error message handling

Problem Description: When an ICMPv6 error message is received, the FreeBSD ICMPv6 stack may extract information from the message to hand to upper-layer protocols. As a part of this operation, it may parse IPv6 header options from a packet embedded in the ICMPv6 message. The handler for a routing...

FreeBSD-SA-20:31.icmp6

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:31.icmp6 Security Advisory The FreeBSD Project Topic: ICMPv6 use-after-free in error message handling Category: core Module: icmp6 Announced: 2020-12-01...

Package Analytics affected by Windows TCP/IP vulnerability

Microsoft disclosed a critical vulnerability in the way ICMPv6 Router Advertisement packets are handled on Windows 10 and Windows Server 2019. An attacker who successfully exploited this vulnerability could gain the ability to execute code on the target server or client. To exploit this...

CVE-2020-16899

A denial of service vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An attacker who successfully exploited this vulnerability could cause a target system to stop responding. To exploit this vulnerability, an attacker would have to send...

CVE-2020-16898

A remote code execution vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An attacker who successfully exploited this vulnerability could gain the ability to execute code on the target server or client. To exploit this vulnerability, an...

Remote code execution

A remote code execution vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An attacker who successfully exploited this vulnerability could gain the ability to execute code on the target server or client. To exploit this vulnerability, an...

Remote code execution

A denial of service vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An attacker who successfully exploited this vulnerability could cause a target system to stop responding. To exploit this vulnerability, an attacker would have to send...

CVE-2020-16899

CVE-2020-16899 is a denial-of-service vulnerability in the Windows TCP/IP stack caused by improper handling of ICMPv6 Router Advertisement packets. An attacker who can send crafted ICMPv6 RA packets to a remote Windows host could cause the system to stop responding. The CVE explicitly notes that ...

CVE-2020-16898

CVE-2020-16898 is a Windows TCP/IP remote code execution vulnerability triggered by specially crafted ICMPv6 Router Advertisement packets. The issue arises from how the Windows TCP/IP stack handles ICMPv6 RA messages, allowing an attacker to execute code on a targeted Windows host by sending craf...

CVE-2020-16898 aka Bad Neighbor / Ping of Death Redux

A remote code execution vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An attacker who successfully exploited this vulnerability could gain the ability to execute code on the target server or client. To exploit this vulnerability, an...

Microsoft Windows TCP/IP Remote Code Execution Vulnerability (CVE-2020-16898) – Automatically Discover, Prioritize and Remediate Using Qualys VMDR®

On October 13, 2020, Microsoft fixed a critical remote code execution vulnerability in the Windows TCP/IP stack for handling ICMPv6 Router Advertisement packets. While Microsoft ranks this vulnerability as “Exploitation More Likely,” we may see a proof-of-concept released soon. The security issue...

There Goes The Neighborhood: Dealing With CVE-2020-16898 (and CVE-2020-1656) (aka"Bad Neighbor")

If you’re in the U.S. and were waiting for an “October surprise”, look no further than CVE-2020-16898 which is a remote code execution RCE vulnerability in the Windows TCP/IP stack, or what our own Tod Beardsley likes to call “exploiting poor implementations of core IETF RFCs”. The vulnerability...

Microsoft Addresses Windows TCP/IP RCE/DoS Vulnerability

Microsoft has released a security update to address a protocol vulnerability—CVE-2020-16898—in Windows Transmission Control Protocol TCP/IP stack handling of Internet Control Message Protocol version 6 ICMPv6 Router Advertisement packets. A remote attacker could exploit this vulnerability to take...