Bug 1225418 (CVE-2023-50977)

Summary: VUL-0: CVE-2023-50977: gnome-shell: gnome-shell: Shell Captive Portal Hijack
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: xiaoguang wang <xiaoguang.wang>
Status: RESOLVED INVALID QA Contact: Security Team bot <security-team>
Severity: Major    
Priority: P3 - Medium CC: camila.matos, stoyan.manolov
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/407862/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-50977:7.5:(AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-05-28 06:36:40 UTC 
In GNOME Shell through 45.2, unauthenticated remote code execution can be achieved by intercepting two DNS requests (GNOME Network Manager and GNOME Shell Portal Helper connectivity checks), and responding with attacker-specific IP addresses. This DNS hijacking causes GNOME Captive Portal to be launched via a WebKitGTK browser, by default, on the victim system; this can run JavaScript code inside a sandbox. NOTE: the vendor's position is that this is not a vulnerability because running JavaScript code inside a sandbox is the intended behavior.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-50977
https://www.cve.org/CVERecord?id=CVE-2023-50977
https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/ceed3e07e44f2cd1bfdbf273523abc0bb4bbd8c1/js/portalHelper/main.js
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7666
https://bugzilla.redhat.com/show_bug.cgi?id=2283545
Comment 2 Camila Camargo de Matos 2024-06-24 17:50:11 UTC 
This CVE has now been rejected.