CVE-2023-1523 : Using the TIOCLINUX ioctl request, a malicious snap could inject contents into t

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.

Published 2023-09-01 19:15:43

Updated 2023-09-08 17:17:40

Source Canonical Ltd.

View at NVD, CVE.org

Products affected by CVE-2023-1523

Canonical » Ubuntu Linux » Version: 16.04 ESM Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 20.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 18.04 ESM Edition
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 22.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 22.10
cpe:2.3:o:canonical:ubuntu_linux:22.10:*:*:*:-:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 23.04
cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:*
Matching versions
Canonical » Snapd
Versions before (<) 2.59.5
cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2023-1523

EPSS FAQ

0.15%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 51 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-1523

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
10.0	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	3.9	6.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: High Integrity: High Availability: High
10.0	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	3.9	6.0	Canonical Ltd.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2023-1523

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-1523

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

'Re: [oss-security] TTY pushback vulnerabilities / TIOCSTI' - MARC
Exploit;Mailing List

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

CVE - CVE-2023-1523
Third Party Advisory
https://github.com/snapcore/snapd/pull/12849

many: introduce seccomp denylist to block ioctl with TIOCLINUX to fix CVE-2023-1523 by alexmurray · Pull Request #12849 · snapcore/snapd · GitHub
Issue Tracking;Patch
https://ubuntu.com/security/notices/USN-6125-1

USN-6125-1: snapd vulnerability | Ubuntu security notices | Ubuntu
Third Party Advisory

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Vulnerability Details : CVE-2023-1523

Products affected by CVE-2023-1523

Exploit prediction scoring system (EPSS) score for CVE-2023-1523

CVSS scores for CVE-2023-1523

CWE ids for CVE-2023-1523

References for CVE-2023-1523