Search criteria
6 vulnerabilities found for snapd by Canonical
CVE-2024-29069 (GCVE-0-2024-29069)
Vulnerability from cvelistv5 – Published: 2024-07-25 19:39 – Updated: 2024-08-02 01:03
VLAI?
Title
snapd will follow archived symlinks when unpacking a filesystem
Summary
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.
Severity ?
4.8 (Medium)
CWE
- CWE-610 - Externally Controlled Reference to a Resource in Another Sphere
Assigner
References
Credits
Zeyad Gouda
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CVE-2024-29068 (GCVE-0-2024-29068)
Vulnerability from cvelistv5 – Published: 2024-07-25 19:28 – Updated: 2024-08-02 01:03
VLAI?
Title
snapd non-regular file indefinite blocking read
Summary
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.
Severity ?
5.8 (Medium)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Credits
Zeyad Gouda
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CVE-2020-11934 (GCVE-0-2020-11934)
Vulnerability from cvelistv5 – Published: 2020-07-29 16:25 – Updated: 2024-09-17 04:04
VLAI?
Title
Sandbox escape vulnerability via snapctl user-open (xdg-open)
Summary
It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2.
Severity ?
5.9 (Medium)
CWE
- Sandbox escape vulnerability
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
Credits
James Henstridge
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CVE-2020-11933 (GCVE-0-2020-11933)
Vulnerability from cvelistv5 – Published: 2020-07-29 16:25 – Updated: 2024-09-17 00:40
VLAI?
Title
local snapd exploit through cloud-init
Summary
cloud-init as managed by snapd on Ubuntu Core 16 and Ubuntu Core 18 devices was run without restrictions on every boot, which a physical attacker could exploit by crafting cloud-init user-data/meta-data via external media to perform arbitrary changes on the device to bypass intended security mechanisms such as full disk encryption. This issue did not affect traditional Ubuntu systems. Fixed in snapd version 2.45.2, revision 8539 and core version 2.45.2, revision 9659.
Severity ?
7.3 (High)
CWE
- CWE-264 - Permissions, Privileges, and Access Controls
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
Credits
Ian Johnson
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CVE-2019-7304 (GCVE-0-2019-7304)
Vulnerability from cvelistv5 – Published: 2019-04-23 15:57 – Updated: 2024-09-16 18:38
VLAI?
Title
Local privilege escalation via snapd socket
Summary
Canonical snapd before version 2.37.1 incorrectly performed socket owner validation, allowing an attacker to run arbitrary commands as root. This issue affects: Canonical snapd versions prior to 2.37.1.
Severity ?
8.8 (High)
CWE
- Type confusion when performing access control check
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Credits
Chris Moberly
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CVE-2019-7303 (GCVE-0-2019-7303)
Vulnerability from cvelistv5 – Published: 2019-04-23 15:57 – Updated: 2024-09-17 01:46
VLAI?
Title
Snapd seccomp filter TIOCSTI ioctl bypass
Summary
A vulnerability in the seccomp filters of Canonical snapd before version 2.37.4 allows a strict mode snap to insert characters into a terminal on a 64-bit host. The seccomp rules were generated to match 64-bit ioctl(2) commands on a 64-bit platform; however, the Linux kernel only uses the lower 32 bits to determine which ioctl(2) commands to run. This issue affects: Canonical snapd versions prior to 2.37.4.
Severity ?
5.7 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Credits
Jann Horn
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