rhsa-2009_0382
Vulnerability from csaf_redhat
Published
2009-03-19 16:10
Modified
2024-09-15 17:41
Summary
Red Hat Security Advisory: libvirt security update

Notes

Topic
Updated libvirt packages that fix two security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. [Updated 5th May 2011] After installing this update and restarting the libvirtd service, the "virsh attach-disk" command failed. Rebooting guest systems after installing the update resolved the issue. The erratum text has been updated to reflect that guest systems must be rebooted. Future updates will advise if a guest reboot is needed. No changes have been made to the packages.
Details
libvirt is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. libvirt also provides tools for remotely managing virtualized systems. The libvirtd daemon was discovered to not properly check user connection permissions before performing certain privileged actions, such as requesting migration of an unprivileged guest domain to another system. A local user able to establish a read-only connection to libvirtd could use this flaw to perform actions that should be restricted to read-write connections. (CVE-2008-5086) libvirt_proxy, a setuid helper application allowing non-privileged users to communicate with the hypervisor, was discovered to not properly validate user requests. Local users could use this flaw to cause a stack-based buffer overflow in libvirt_proxy, possibly allowing them to run arbitrary code with root privileges. (CVE-2009-0036) All users are advised to upgrade to these updated packages, which contain backported patches which resolve these issues. After installing the update, libvirtd must be restarted manually (for example, by issuing a "service libvirtd restart" command), and guest systems rebooted, for this change to take effect.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "Updated libvirt packages that fix two security issues are now available for\nRed Hat Enterprise Linux 5.\n\nThis update has been rated as having moderate security impact by the Red\nHat Security Response Team.\n\n[Updated 5th May 2011]\nAfter installing this update and restarting the libvirtd service, the\n\"virsh attach-disk\" command failed. Rebooting guest systems after\ninstalling the update resolved the issue. The erratum text has been updated\nto reflect that guest systems must be rebooted. Future updates will advise\nif a guest reboot is needed. No changes have been made to the packages.",
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            "5Client-VT:libvirt-devel-0:0.3.3-14.el5_3.1.i386",
            "5Client-VT:libvirt-devel-0:0.3.3-14.el5_3.1.ia64",
            "5Client-VT:libvirt-devel-0:0.3.3-14.el5_3.1.x86_64",
            "5Client-VT:libvirt-python-0:0.3.3-14.el5_3.1.i386",
            "5Client-VT:libvirt-python-0:0.3.3-14.el5_3.1.ia64",
            "5Client-VT:libvirt-python-0:0.3.3-14.el5_3.1.x86_64",
            "5Server-VT:libvirt-0:0.3.3-14.el5_3.1.i386",
            "5Server-VT:libvirt-0:0.3.3-14.el5_3.1.ia64",
            "5Server-VT:libvirt-0:0.3.3-14.el5_3.1.src",
            "5Server-VT:libvirt-0:0.3.3-14.el5_3.1.x86_64",
            "5Server-VT:libvirt-debuginfo-0:0.3.3-14.el5_3.1.i386",
            "5Server-VT:libvirt-debuginfo-0:0.3.3-14.el5_3.1.ia64",
            "5Server-VT:libvirt-debuginfo-0:0.3.3-14.el5_3.1.x86_64",
            "5Server-VT:libvirt-devel-0:0.3.3-14.el5_3.1.i386",
            "5Server-VT:libvirt-devel-0:0.3.3-14.el5_3.1.ia64",
            "5Server-VT:libvirt-devel-0:0.3.3-14.el5_3.1.x86_64",
            "5Server-VT:libvirt-python-0:0.3.3-14.el5_3.1.i386",
            "5Server-VT:libvirt-python-0:0.3.3-14.el5_3.1.ia64",
            "5Server-VT:libvirt-python-0:0.3.3-14.el5_3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libvirt: libvirt_proxy buffer overflow"
    }
  ]
}


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