Vulnerability in Canonical Ltd. Snapd
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.
EPSS: 0.014 (70.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Canonical Ltd. Snapd — versions 2.59.5
- Canonical Snapd
- Canonical Ubuntu_linux — versions 16.04, 18.04, 20.04
Weakness classification (CWE)
References
- security@ubuntu.com (vendor-advisory, Third Party Advisory)
- security@ubuntu.com (issue-tracking, Patch, Issue Tracking)
- security@ubuntu.com (mailing-list, Exploit, Mailing List)
- security@ubuntu.com (issue-tracking, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-1523?
- CVE-2023-1523 is a critical-severity vulnerability in Canonical Ltd. Snapd, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 10.0/10. Published 2023-09-01.
- How severe is CVE-2023-1523?
- Critical severity. CVSS v3 base score is 10.0 out of 10.