Qemu block driver for the QCOW version 1 image format is vulnerable to an integer overflow flaw. It occurs due to weak input validations or logic errors. Such integer overflow could lead to buffer overflows, memory corruption or crash in Qemu instance. An user able to alter the Qemu disk image files loaded by a guest could use this flaw to crash the Qemu instance resulting in DoS or corrupt QEMU process memory on the host, which could potentially result in arbitrary code execution on the host with the privileges of the QEMU process. Upstream fix: ------------- -> https://lists.gnu.org/archive/html/qemu-devel/2014-05/msg02155.html
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 1097232]
qemu-1.6.2-6.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
IssueDescription: An integer overflow flaw was found in the QEMU block driver for QCOW version 1 disk images. A user able to alter the QEMU disk image files loaded by a guest could use this flaw to corrupt QEMU process memory on the host, which could potentially result in arbitrary code execution on the host with the privileges of the QEMU process.
This issue has been addressed in following products: Red Hat Enterprise Linux 7 Via RHSA-2014:0927 https://rhn.redhat.com/errata/RHSA-2014-0927.html
Acknowledgements: Red Hat would like to thank NSA for reporting this issue.
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2014:1075 https://rhn.redhat.com/errata/RHSA-2014-1075.html
This issue has been addressed in following products: RHEV-H and Agents for RHEL-6 Via RHSA-2014:1076 https://rhn.redhat.com/errata/RHSA-2014-1076.html
This issue has been addressed in following products: RHEV-H and Agents for RHEL-6 Via RHSA-2014:1168 https://rhn.redhat.com/errata/RHSA-2014-1168.html
This issue has been addressed in the following products: OpenStack 4 for RHEL 6 OpenStack 5 for RHEL 6 Via RHSA-2014:1187 https://rhn.redhat.com/errata/RHSA-2014-1187.html
This issue has been addressed in the following products: OpenStack 5 for RHEL 7 Via RHSA-2014:1268 https://rhn.redhat.com/errata/RHSA-2014-1268.html