RHEL 6 : rhev-hypervisor (RHSA-2016:0277)
Critical Nessus Plugin ID 88889
SynopsisThe remote Red Hat host is missing one or more security updates.
DescriptionUpdated rhev-hypervisor packages that fix one security issue are now available.
Red Hat Product Security has rated this update as having Critical security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
The rhev-hypervisor package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent.
Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions.
A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. A remote attacker could create a specially crafted DNS response which could cause libresolv to crash or, potentially, execute code with the permissions of the user running the library. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module. (CVE-2015-7547)
This issue was discovered by the Google Security Team and Red Hat.
Users of Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to these updated packages.
SolutionUpdate the affected rhev-hypervisor6 and / or rhev-hypervisor7 packages.