CVSS: 4.8EPSS: 0%CPEs: 1EXPL: 0CVE-2024-29069 – snapd will follow archived symlinks when unpacking a filesystem
https://notcve.org/view.php?id=CVE-2024-29069
In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extracting a snap. The snap format is a squashfs file-system image and so can contain symbolic links and other file types. Various file entries within the snap squashfs image (such as icons and desktop files etc) are directly read by snapd when it is extracted. An attacker who could convince a user to install a malicious snap which contained symbolic links at these paths could then cause snapd to write out the contents of the symbolic link destination into a world-readable directory. This in-turn could allow an unprivileged user to gain access to privileged information. • https://github.com/snapcore/snapd/pull/13682 • CWE-610: Externally Controlled Reference to a Resource in Another Sphere •
CVSS: 5.8EPSS: 0%CPEs: 1EXPL: 0CVE-2024-29068 – snapd non-regular file indefinite blocking read
https://notcve.org/view.php?id=CVE-2024-29068
In snapd versions prior to 2.62, snapd failed to properly check the file type when extracting a snap. The snap format is a squashfs file-system image and so can contain files that are non-regular files (such as pipes or sockets etc). Various file entries within the snap squashfs image (such as icons etc) are directly read by snapd when it is extracted. An attacker who could convince a user to install a malicious snap which contained non-regular files at these paths could then cause snapd to block indefinitely trying to read from such files and cause a denial of service. • https://github.com/snapcore/snapd/commit/b66fee81606a1c05f965a876ccbaf44174194063 https://github.com/snapcore/snapd/pull/13682 • CWE-20: Improper Input Validation •
CVSS: 10.0EPSS: 0%CPEs: 7EXPL: 1CVE-2023-1523
https://notcve.org/view.php?id=CVE-2023-1523
Using the TIOCLINUX ioctl request, a malicious snap could inject contents into the input of the controlling terminal which could allow it to cause arbitrary commands to be executed outside of the snap sandbox after the snap exits. Graphical terminal emulators like xterm, gnome-terminal and others are not affected - this can only be exploited when snaps are run on a virtual console. Utilizando la petición IOCTL de TIOCLINUX, un snap malicoso podría inyectar contenido en la entrada del terminal de control, lo que podría permitir que se ejecutaran comandos arbitrarios fuera del sandbox del snap después de que éste saliera. Los emuladores gráficos de terminal como xterm, gnome-terminal y otros no se ven afectados. Esto sólo puede ser explotado cuando los snaps se ejecutan en una consola virtual. • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1523 https://github.com/snapcore/snapd/pull/12849 https://marc.info/?l=oss-security&m=167879021709955&w=2 https://ubuntu.com/security/notices/USN-6125-1 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 1CVE-2022-3328 – snap-confine must_mkdir_and_open_with_perms() Race Condition
https://notcve.org/view.php?id=CVE-2022-3328
Race condition in snap-confine's must_mkdir_and_open_with_perms() Condición de ejecución en must_mkdir_and_open_with_perms() de snap-confine • https://github.com/Mr-xn/CVE-2022-3328 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3328 https://ubuntu.com/security/notices/USN-5753-1 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 8.2EPSS: 0%CPEs: 6EXPL: 2CVE-2021-4120 – snapd could be made to bypass intended access restrictions through snap content interfaces and layout paths
https://notcve.org/view.php?id=CVE-2021-4120
snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary AppArmor policy rules via malformed content interface and layout declarations and hence escape strict snap confinement. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1 snapd versión 2.54.2, no lleva a cabo una comprobación suficiente de la interfaz de contenido de snap y de las rutas de diseño, resultando en una posibilidad de que los snaps inyecten reglas de política de AppArmor arbitrarias por medio de declaraciones de interfaz de contenido y de diseño mal formadas y, por tanto, escapen al confinamiento estricto de snap. Corregido en snapd versiones 2.54.3+18.04, 2.54.3+20.04 y 2.54.3+21.10.1 • http://www.openwall.com/lists/oss-security/2022/02/18/2 https://bugs.launchpad.net/snapd/+bug/1949368 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7 https://ubuntu.com/security/notices/USN-5292-1 • CWE-20: Improper Input Validation •