Impact: Moderate Public Date: 2014-06-30 CWE: CWE-835 Bugzilla: 1257735: CVE-2015-5239 qemu-kvm: Integer overflow in vnc_client_read() and protocol_client_msg() An integer overflow issue was found in the VNC display driver of the QEMU emulator, which could be used by a privileged guest user to create a denial of service attack. The overflow occurred when processing a CLIENT_CUT_TEXT message with too large a payload size. The integer overflow led to an infinite loop inside the VNC driver, eventually crashing the QEMU process on the host.
Find out more about CVE-2015-5239 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the versions of kvm and xen packages as shipped with Red Hat Enterprise Linux 5.
This issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6 and 7.
This issue affects the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
This issue affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 4 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:S/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) | qemu-kvm-rhev | Will not fix |
| Red Hat Enterprise Linux 7 | qemu-kvm | Will not fix |
| Red Hat Enterprise Linux 6 | qemu-kvm | Will not fix |
| Red Hat Enterprise Linux 5 | kvm | Will not fix |
| Red Hat Ceph Storage 1.1 | qemu-kvm | Will not fix |
| RHEV Manager 3 | rhev-hypervisor | Will not fix |
| RHEV Manager 3 | qemu-kvm-rhev | Will not fix |
Vulmon