rhsa-2007_0323
Vulnerability from csaf_redhat
Published
2007-10-02 20:53
Modified
2024-11-22 01:01
Summary
Red Hat Security Advisory: xen security update

Notes

Topic
An updated Xen package to fix multiple security issues is now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team.
Details
The Xen package contains the tools for managing the virtual machine monitor in Red Hat Enterprise Linux virtualization. The following security flaws are fixed in the updated Xen package: Joris van Rantwijk found a flaw in the Pygrub utility which is used as a boot loader for guest domains. A malicious local administrator of a guest domain could create a carefully crafted grub.conf file which would trigger the execution of arbitrary code outside of that domain. (CVE-2007-4993) Tavis Ormandy discovered a heap overflow flaw during video-to-video copy operations in the Cirrus VGA extension code used in Xen. A malicious local administrator of a guest domain could potentially trigger this flaw and execute arbitrary code outside of the domain. (CVE-2007-1320) Tavis Ormandy discovered insufficient input validation leading to a heap overflow in the Xen NE2000 network driver. If the driver is in use, a malicious local administrator of a guest domain could potentially trigger this flaw and execute arbitrary code outside of the domain. Xen does not use this driver by default. (CVE-2007-1321) Users of Xen should update to these erratum packages containing backported patches which correct these issues.
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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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2007-4993"
        },
        {
          "category": "external",
          "summary": "RHBZ#302801",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=302801"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2007-4993",
          "url": "https://www.cve.org/CVERecord?id=CVE-2007-4993"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2007-4993",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2007-4993"
        }
      ],
      "release_date": "2007-09-22T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2007-10-02T20:53:00+00:00",
          "details": "Before applying this update, make sure that all previously-released\nerrata relevant to your system have been applied.  \n\nThis update is available via Red Hat Network.  Details on how to use \nthe Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/FAQ_58_10188",
          "product_ids": [
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2007:0323"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "xen guest root can escape to domain 0 through pygrub"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.