A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the inflate_buffer function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service.
Weakness
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | * | 8.0.3 (including) |
| Red Hat Enterprise Linux 8 | RedHat | virt-devel:rhel-8100020240314161907.e155f54d | * |
| Red Hat Enterprise Linux 8 | RedHat | virt:rhel-8100020240314161907.e155f54d | * |
| Red Hat Enterprise Linux 9 | RedHat | qemu-kvm-17:8.2.0-11.el9_4 | * |
| Qemu | Ubuntu | bionic | * |
| Qemu | Ubuntu | jammy | * |
| Qemu | Ubuntu | kinetic | * |
| Qemu | Ubuntu | lunar | * |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | xenial | * |
References
- https://access.redhat.com/errata/RHSA-2024:2135
- https://access.redhat.com/errata/RHSA-2024:2962
- https://access.redhat.com/security/cve/CVE-2023-3255
- https://bugzilla.redhat.com/show_bug.cgi?id=2218486
- https://access.redhat.com/errata/RHSA-2024:2135
- https://access.redhat.com/errata/RHSA-2024:2962
- https://access.redhat.com/security/cve/CVE-2023-3255
- https://bugzilla.redhat.com/show_bug.cgi?id=2218486
- https://security.netapp.com/advisory/ntap-20231020-0008/