rhsa-2013_1674
Vulnerability from csaf_redhat
Published
2013-11-20 16:44
Modified
2024-11-22 06:59
Summary
Red Hat Security Advisory: dracut security, bug fix, and enhancement update

Notes

Topic
Updated dracut packages that fix one security issue, several bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate 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.
Details
The dracut packages include an event-driven initramfs generator infrastructure based on the udev device manager. The virtual file system, initramfs, is loaded together with the kernel at boot time and initializes the system, so it can read and boot from the root partition. It was discovered that dracut created initramfs images as world readable. A local user could possibly use this flaw to obtain sensitive information from these files, such as iSCSI authentication passwords, encrypted root file system crypttab passwords, or other information. (CVE-2012-4453) This issue was discovered by Peter Jones of the Red Hat Installer Team. These updated dracut packages include numerous bug fixes and two enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.5 Technical Notes, linked to in the References, for information on the most significant of these changes. All dracut users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.
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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  "vulnerabilities": [
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      "acknowledgments": [
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          "names": [
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          ],
          "organization": "Red Hat Installer Team",
          "summary": "This issue was discovered by Red Hat."
        }
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      "ids": [
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          "text": "859448"
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          "category": "description",
          "text": "It was discovered that dracut created initramfs images as world readable. A local user could possibly use this flaw to obtain sensitive information from these files, such as iSCSI authentication passwords, encrypted root file system crypttab passwords, or other information.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "dracut: Creates initramfs images with world-readable permissions (information disclosure)",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2012-4453"
        },
        {
          "category": "external",
          "summary": "RHBZ#859448",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=859448"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2012-4453",
          "url": "https://www.cve.org/CVERecord?id=CVE-2012-4453"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2012-4453",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-4453"
        }
      ],
      "release_date": "2012-09-27T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2013-11-20T16:44:00+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/site/articles/11258",
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            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:H/Au:N/C:C/I:N/A:N",
            "version": "2.0"
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "dracut: Creates initramfs images with world-readable permissions (information disclosure)"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.