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CVE-2021-4207

Status Candidate

Overview

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

Related Files

Red Hat Security Advisory 2022-5821-01
Posted Aug 4, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-5821-01 - Kernel-based Virtual Machine offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems. Issues addressed include buffer overflow, integer overflow, and memory leak vulnerabilities.

tags | advisory, overflow, kernel, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2021-4206, CVE-2021-4207, CVE-2022-26353, CVE-2022-26354
SHA-256 | b0c9666aad6ba1beeca61ef826a8716bb5430800c2fc2a1e86aa57ed09be8138
Red Hat Security Advisory 2022-5002-01
Posted Jun 19, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-5002-01 - The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Issues addressed include buffer overflow, integer overflow, and memory leak vulnerabilities.

tags | advisory, overflow, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2021-4206, CVE-2021-4207, CVE-2022-26353, CVE-2022-26354
SHA-256 | 2983ba7cf11771cc4240c259323e46ae436b2ab42afcb9b2c8ea0d827283614b
Debian Security Advisory 5133-1
Posted May 28, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5133-1 - Multiple security issues were discovered in QEMU, a fast processor emulator, which could result in denial of service or the execution of arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, debian
advisories | CVE-2021-4206, CVE-2021-4207, CVE-2022-0358, CVE-2022-26353, CVE-2022-26354
SHA-256 | 57990d647a23586c852204bc219b23e57c397992ca00db3c856fe2e4844ce6d4
PHP Event Calendar Lite Edition Cross Site Scripting
Posted Nov 5, 2021
Authored by Erik Steltzner, Maurizio Ruchay | Site syss.de

PHP Event Calendar Lite Edition suffers from a persistent cross site scripting vulnerability.

tags | exploit, php, xss
advisories | CVE-2021-42078
SHA-256 | 09c617426974d7713fb8ccab94dcccb7210bc336670db3a9f3be869096871afb
PHP Event Calendar Lite Edition SQL Injection
Posted Nov 5, 2021
Authored by Erik Steltzner, Maurizio Ruchay | Site syss.de

PHP Event Calendar Lite Edition suffers from a remote SQL injection vulnerability that allows for authentication bypass.

tags | exploit, remote, php, sql injection
advisories | CVE-2021-42077
SHA-256 | 3faf37775ad2f15a9b2f6c16d0cf7e32bcf7f871fe41a4df925d3d66c307459e
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