CVE-2023-1523 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Severity

99%

Complexity

39%

Confidentiality

100%

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.

CVSS 3.1 Base Score 9.9. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Overview

Type

Canonical Ubuntu Linux

First reported 1 year ago

2023-09-01 19:15:00

Last updated 1 year ago

2023-09-08 17:17:00

Affected Software

Canonical Ubuntu Linux 20.04 LTS Edition

20.04

Canonical Ubuntu Linux 16.04 ESM Edition

16.04

Canonical Ubuntu Linux 18.04 ESM Edition

18.04

References

https://ubuntu.com/security/notices/USN-6125-1

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

Third Party Advisory

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1523

Third Party Advisory

https://github.com/snapcore/snapd/pull/12849

Issue Tracking, Patch

https://marc.info/?l=oss-security&m=167879021709955&w=2

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