-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-4830-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff January 14, 2021 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : flatpak CVE ID : not yet available Simon McVittie discovered a bug in the flatpak-portal service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape). The Flatpak portal D-Bus service (flatpak-portal, also known by its D-Bus service name org.freedesktop.portal.Flatpak) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself. In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the flatpak run command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the flatpak run command, and use them to execute arbitrary code that is not in a sandbox. For the stable distribution (buster), this problem has been fixed in version 1.2.5-0+deb10u2. We recommend that you upgrade your flatpak packages. For the detailed security status of flatpak please refer to its security tracker page at: https://security-tracker.debian.org/tracker/flatpak Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: [email protected]
Debian: DSA-4830-1: flatpak security update
January 14, 2021
Simon McVittie discovered a bug in the flatpak-portal service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape)
Summary
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Debian Security Advisory DSA-4830-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff January 14, 2021 https://www.debian.org/security/faq Simon McVittie discovered a bug in the flatpak-portal service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape). The Flatpak portal D-Bus service (flatpak-portal, also known by its D-Bus service name org.freedesktop.portal.Flatpak) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself. In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the flatpak run command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the flatpak run command, and use them to execute arbitrary code that is not in a sandbox. For the stable distribution (buster), this problem has been fixed in version 1.2.5-0+deb10u2. We recommend that you upgrade your flatpak packages. For the detailed security status of flatpak please refer to its security tracker page at: https://security-tracker.debian.org/tracker/flatpak Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: [email protected]
Severity
Package : flatpak
CVE ID : not yet available
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