1-byte memory overwrite in resolver

1-byte memory overwrite in resolver Severity: medium CVE-2021-23017 Not vulnerable: 1.21.0+, 1.20.1+ Vulnerable: 0.6.18-1.20.0...

CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

CVE-2021-23017

CVE-2021-23017 affects nginx's resolver. A security issue arises from an off-by-one in ngx_resolver_copy when DNS labels are followed by a root-domain pointer, allowing a crafted UDP response to overwrite the least significant byte of the next heap chunk metadata. This can lead to a worker proces...

CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

USN-4972-1: PostgreSQL vulnerabilities

Tom Lane discovered that PostgreSQL incorrect handled certain array subscripting calculations. An authenticated attacker could possibly use this issue to overwrite server memory and escalate privileges. CVE-2021-32027 Andres Freund discovered that PostgreSQL incorrect handled certain INSERT ... O...

USN-4972-1 postgresql-10, postgresql-12, postgresql-13 vulnerabilities

Tom Lane discovered that PostgreSQL incorrect handled certain array subscripting calculations. An authenticated attacker could possibly use this issue to overwrite server memory and escalate privileges. CVE-2021-32027 Andres Freund discovered that PostgreSQL incorrect handled certain INSERT ... O...

CVE-2021-23017: Off-by-one Error

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

nginx 0.6.18 - 1.20.0 1-byte Memory Overwrite Vulnerability

nginx is prone to a 1-byte memory overwrite vulnerability. Copyright C 2021 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 software; yo...

FreeBSD : NGINX -- 1-byte memory overwrite in resolver (0882f019-bd60-11eb-9bdd-8c164567ca3c)

NGINX team reports : 1-byte memory overwrite might occur during DNS server response processing if the 'resolver' directive was used, allowing an attacker who is able to forge UDP packets from the DNS server to cause worker process crash or, potentially, arbitrary code execution. %NASLMINLEVEL 703...

NGINX -- 1-byte memory overwrite in resolver

NGINX team reports: 1-byte memory overwrite might occur during DNS server response processing if the "resolver" directive was used, allowing an attacker who is able to forge UDP packets from the DNS server to cause worker process crash or, potentially, arbitrary code execution...

UBUNTU-CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

F5 NGINX Controller 安全漏洞

F5 NGINX Controller is a centralized monitoring and management platform for NGINX from F5. The platform supports the management of multiple NGINX instances using a visual interface. A security vulnerability exists in F5 NGINX Controller that allows an attacker to forge UDP packets from a DNS serv...

PT-2021-3126

Name of the Vulnerable Software and Affected Versions nginx versions 1.20.0 Description A security issue in the nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause a 1-byte memory overwrite, resulting in a worker process crash...

Telegram Stack Overflow Vulnerability (CNVD-2021-38308)

Telegram is an instant messaging mobile application. A stack overflow vulnerability exists in the custom derived graysplitcubic function of the Rlottie library for Telegram Android version prior to 7.1.0 2090, iOS version prior to 7.1, and macOS version prior to 7.1. An attacker can exploit this...

CVE-2021-31321

Telegram clients for Android (<7.1.0, 2090), iOS (<7.1), and macOS (

What is a Buffer Overflow Attack❓ Types, How hackers use it | Wallarm

A buffer is a space of ​​physical storage memory used to store temporary data while moving from one place to another. These buffers usually reside in RAM. Computers often use buffers to improve performance; most modern hard drives use the benefits of buffering to access data efficiently, and many...

Unspecified vulnerability in Linux kernel PowerVR GPU kernel driver

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the PowerVR GPU kernel driver for the Linux kernel, which can be exploited by an attacker to overwrite heap memory via physmemnewrambackeddpm...