Bug 2236890 (CVE-2023-1523)

Summary:	CVE-2023-1523 snapd: code exec via TIOCLINUX ioctl request
Product:	[Other] Security Response	Reporter:	Chess Hazlett <chazlett>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:	2236891, 2236892
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Description Chess Hazlett 2023-09-01 21:36:41 UTC

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.

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

Comment 1 Chess Hazlett 2023-09-01 21:36:57 UTC

Created snapd tracking bugs for this issue:

Affects: epel-all [bug 2236891]
Affects: fedora-all [bug 2236892]