Bugzilla – Bug 1218889
VUL-0: CVE-2023-6683: qemu: VNC: NULL pointer dereference in qemu_clipboard_request()
Last modified: 2024-07-09 06:39:34 UTC
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-6683 https://www.cve.org/CVERecord?id=CVE-2023-6683 https://access.redhat.com/security/cve/CVE-2023-6683 https://bugzilla.redhat.com/show_bug.cgi?id=2254825
Seems like this is addressed by this two patches: - https://lore.kernel.org/qemu-devel/20240216133140.3611100-3-marcandre.lureau@redhat.com/ - https://lore.kernel.org/qemu-devel/20240216133140.3611100-4-marcandre.lureau@redhat.com/ Not upstream yet.
Landed: - commits: 405484b29f6548c7b86549b0f961b906337aa68a 9c416582611b7495bdddb4c5456c7acb64b78938 They'll be in QEMU 9.0, but they are not in any of the current released version (not even stable ones)
(In reply to Dario Faggioli from comment #2) > Landed: > - commits: > 405484b29f6548c7b86549b0f961b906337aa68a > 9c416582611b7495bdddb4c5456c7acb64b78938 > > They'll be in QEMU 9.0, but they are not in any of the current released > version (not even stable ones) > Correction: it is in 8.2.2
SUSE-SU-2024:1394-1: An update that solves five vulnerabilities can now be installed. Category: security (important) Bug References: 1213269, 1218889, 1220134, 1222843, 1222845 CVE References: CVE-2023-3019, CVE-2023-6683, CVE-2024-24474, CVE-2024-3446, CVE-2024-3447 Maintenance Incident: [SUSE:Maintenance:33442](https://smelt.suse.de/incident/33442/) Sources used: openSUSE Leap 15.4 (src): qemu-linux-user-6.2.0-150400.37.29.1, qemu-6.2.0-150400.37.29.1 openSUSE Leap Micro 5.3 (src): qemu-6.2.0-150400.37.29.1 openSUSE Leap Micro 5.4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Micro for Rancher 5.3 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Micro 5.3 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Micro for Rancher 5.4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Micro 5.4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Desktop 15 SP4 LTSS 15-SP4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Server 15 SP4 LTSS 15-SP4 (src): qemu-6.2.0-150400.37.29.1 SUSE Linux Enterprise Server for SAP Applications 15 SP4 (src): qemu-6.2.0-150400.37.29.1 SUSE Manager Proxy 4.3 (src): qemu-6.2.0-150400.37.29.1 SUSE Manager Retail Branch Server 4.3 (src): qemu-6.2.0-150400.37.29.1 SUSE Manager Server 4.3 (src): qemu-6.2.0-150400.37.29.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
SUSE-SU-2024:1438-1: An update that solves four vulnerabilities can now be installed. Category: security (important) Bug References: 1213269, 1218889, 1222843, 1222845 CVE References: CVE-2023-3019, CVE-2023-6683, CVE-2024-3446, CVE-2024-3447 Maintenance Incident: [SUSE:Maintenance:33445](https://smelt.suse.de/incident/33445/) Sources used: openSUSE Leap 15.5 (src): qemu-7.1.0-150500.49.15.1, qemu-linux-user-7.1.0-150500.49.15.1 SUSE Linux Enterprise Micro 5.5 (src): qemu-7.1.0-150500.49.15.1 Basesystem Module 15-SP5 (src): qemu-7.1.0-150500.49.15.1 SUSE Package Hub 15 15-SP5 (src): qemu-7.1.0-150500.49.15.1 Server Applications Module 15-SP5 (src): qemu-7.1.0-150500.49.15.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.