CVE-2024-29068
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.
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.6 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
- EPSS
- 0.21% probability · 12th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- canonical/snapd
- Source
- security@ubuntu.com
References
- https://github.com/snapcore/snapd/commit/b66fee81606a1c05f965a876ccbaf44174194063Patch
- https://github.com/snapcore/snapd/pull/13682Issue Tracking, Patch
- https://github.com/snapcore/snapd/commit/b66fee81606a1c05f965a876ccbaf44174194063Patch
- https://github.com/snapcore/snapd/pull/13682Issue Tracking, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.