A flaw was found in the QEMU disk image utility (qemu-img) info command. A specially crafted image file containing a json:{} value describing block devices in QMP could cause the qemu-img process on the host to consume large amounts of memory or CPU time, leading to denial of service or read/write to an existing external file.
The product does not properly control the allocation and maintenance of a limited resource.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Advanced Virtualization for RHEL 8.2.1 | RedHat | virt:8.2-8020120240708124623.863bb0db | * |
| Advanced Virtualization for RHEL 8.4.0.EUS | RedHat | virt:av-8040020240708093550.522a0ee4 | * |
| Advanced Virtualization for RHEL 8.4.0.EUS | RedHat | virt-devel:av-8040020240708093550.522a0ee4 | * |
| Red Hat Enterprise Linux 8 | RedHat | virt-devel:rhel-8100020240704072441.489197e6 | * |
| Red Hat Enterprise Linux 8 | RedHat | virt:rhel-8100020240704072441.489197e6 | * |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | RedHat | virt:rhel-8040020240703100448.522a0ee4 | * |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | RedHat | virt:rhel-8040020240703100448.522a0ee4 | * |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | RedHat | virt:rhel-8040020240703100448.522a0ee4 | * |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | RedHat | virt:rhel-8060020240703092415.ad008a3a | * |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | RedHat | virt:rhel-8060020240703092415.ad008a3a | * |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | RedHat | virt:rhel-8060020240703092415.ad008a3a | * |
| Red Hat Enterprise Linux 8.8 Extended Update Support | RedHat | virt-devel:rhel-8080020240703085245.63b34585 | * |
| Red Hat Enterprise Linux 8.8 Extended Update Support | RedHat | virt:rhel-8080020240703085245.63b34585 | * |
| Red Hat Enterprise Linux 9 | RedHat | qemu-kvm-17:8.2.0-11.el9_4.4 | * |
| Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | RedHat | qemu-kvm-17:6.2.0-11.el9_0.9 | * |
| Red Hat Enterprise Linux 9.2 Extended Update Support | RedHat | qemu-kvm-17:7.2.0-14.el9_2.11 | * |
| Qemu | Ubuntu | devel | * |
| Qemu | Ubuntu | focal | * |
| Qemu | Ubuntu | jammy | * |
| Qemu | Ubuntu | mantic | * |
| Qemu | Ubuntu | noble | * |
| Qemu | Ubuntu | oracular | * |
| Qemu | Ubuntu | plucky | * |
| Qemu | Ubuntu | trusty/esm | * |
| Qemu | Ubuntu | upstream | * |
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.