Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as “driver domains”. Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn’t have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713
NVD-CWE-noinfo
CVE-2021-28713
Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as “driver domains”. Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn’t have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713
CVE-2021-28789
The unofficial apple/swift-format extension before 1.1.2 for Visual Studio Code allows remote attackers to execute arbitrary code by constructing a malicious workspace with a crafted apple-swift-format.path configuration value that triggers execution upon opening the workspace.
CVE-2021-28790
The unofficial SwiftLint extension before 1.4.5 for Visual Studio Code allows remote attackers to execute arbitrary code by constructing a malicious workspace with a crafted swiftlint.path configuration value that triggers execution upon opening the workspace.
CVE-2021-28792
The unofficial Swift Development Environment extension before 2.12.1 for Visual Studio Code allows remote attackers to execute arbitrary code by constructing a malicious workspace with a crafted sourcekit-lsp.serverPath, swift.languageServerPath, swift.path.sourcekite, swift.path.sourcekiteDockerMode, swift.path.swift_driver_bin, or swift.path.shell configuration value that triggers execution upon opening the workspace.
CVE-2021-28794
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
