RHSA-2008:0789

Vulnerability from csaf_redhat - Published: 2008-08-11 17:02 - Updated: 2026-06-25 10:35
Summary
Red Hat Security Advisory: dnsmasq security update
Severity
Moderate
Notes
Topic: An updated dnsmasq package that implements UDP source-port randomization is 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.
Details: Dnsmasq is lightweight DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. The dnsmasq DNS resolver used a fixed source UDP port. This could have made DNS spoofing attacks easier. dnsmasq has been updated to use random UDP source ports, helping to make DNS spoofing attacks harder. (CVE-2008-1447) All dnsmasq users are advised to upgrade to this updated package, that upgrades dnsmasq to version 2.45, which resolves this issue.
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.
CVE-2008-1447

The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2) Microsoft DNS in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 and SP2; and other implementations allow remote attackers to spoof DNS traffic via a birthday attack that uses in-bailiwick referrals to conduct cache poisoning against recursive resolvers, related to insufficient randomness of DNS transaction IDs and source ports, aka "DNS Insufficient Socket Entropy Vulnerability" or "the Kaminsky bug."

Affected products
Product Identifier Version Remediation
Unresolved product id: 5Client:dnsmasq-0:2.45-1.el5_2.1.i386 —
Vendor Fix fix
Unresolved product id: 5Client:dnsmasq-0:2.45-1.el5_2.1.src —
Vendor Fix fix
Unresolved product id: 5Client:dnsmasq-0:2.45-1.el5_2.1.x86_64 —
Vendor Fix fix
Unresolved product id: 5Client:dnsmasq-debuginfo-0:2.45-1.el5_2.1.i386 —
Vendor Fix fix
Unresolved product id: 5Client:dnsmasq-debuginfo-0:2.45-1.el5_2.1.x86_64 —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-0:2.45-1.el5_2.1.i386 —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-0:2.45-1.el5_2.1.ia64 —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-0:2.45-1.el5_2.1.ppc —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-0:2.45-1.el5_2.1.s390x —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-0:2.45-1.el5_2.1.src —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-0:2.45-1.el5_2.1.x86_64 —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.i386 —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.ia64 —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.ppc —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.s390x —
Vendor Fix fix
Unresolved product id: 5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.x86_64 —
Vendor Fix fix
Threats
Impact Important
References
Acknowledgments
Dan Kaminsky
To clipboard 

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  "vulnerabilities": [
    {
      "acknowledgments": [
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            "Dan Kaminsky"
          ]
        }
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      "cve": "CVE-2008-1447",
      "discovery_date": "2008-05-05T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "449345"
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      "notes": [
        {
          "category": "description",
          "text": "The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2) Microsoft DNS in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 and SP2; and other implementations allow remote attackers to spoof DNS traffic via a birthday attack that uses in-bailiwick referrals to conduct cache poisoning against recursive resolvers, related to insufficient randomness of DNS transaction IDs and source ports, aka \"DNS Insufficient Socket Entropy Vulnerability\" or \"the Kaminsky bug.\"",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bind: implement source UDP port randomization (CERT VU#800113)",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "5Client:dnsmasq-0:2.45-1.el5_2.1.i386",
          "5Client:dnsmasq-0:2.45-1.el5_2.1.src",
          "5Client:dnsmasq-0:2.45-1.el5_2.1.x86_64",
          "5Client:dnsmasq-debuginfo-0:2.45-1.el5_2.1.i386",
          "5Client:dnsmasq-debuginfo-0:2.45-1.el5_2.1.x86_64",
          "5Server:dnsmasq-0:2.45-1.el5_2.1.i386",
          "5Server:dnsmasq-0:2.45-1.el5_2.1.ia64",
          "5Server:dnsmasq-0:2.45-1.el5_2.1.ppc",
          "5Server:dnsmasq-0:2.45-1.el5_2.1.s390x",
          "5Server:dnsmasq-0:2.45-1.el5_2.1.src",
          "5Server:dnsmasq-0:2.45-1.el5_2.1.x86_64",
          "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.i386",
          "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.ia64",
          "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.ppc",
          "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.s390x",
          "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2008-1447"
        },
        {
          "category": "external",
          "summary": "RHBZ#449345",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=449345"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2008-1447",
          "url": "https://www.cve.org/CVERecord?id=CVE-2008-1447"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2008-1447",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2008-1447"
        }
      ],
      "release_date": "2008-07-08T18:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2008-08-11T17:02:00+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": [
            "5Client:dnsmasq-0:2.45-1.el5_2.1.i386",
            "5Client:dnsmasq-0:2.45-1.el5_2.1.src",
            "5Client:dnsmasq-0:2.45-1.el5_2.1.x86_64",
            "5Client:dnsmasq-debuginfo-0:2.45-1.el5_2.1.i386",
            "5Client:dnsmasq-debuginfo-0:2.45-1.el5_2.1.x86_64",
            "5Server:dnsmasq-0:2.45-1.el5_2.1.i386",
            "5Server:dnsmasq-0:2.45-1.el5_2.1.ia64",
            "5Server:dnsmasq-0:2.45-1.el5_2.1.ppc",
            "5Server:dnsmasq-0:2.45-1.el5_2.1.s390x",
            "5Server:dnsmasq-0:2.45-1.el5_2.1.src",
            "5Server:dnsmasq-0:2.45-1.el5_2.1.x86_64",
            "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.i386",
            "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.ia64",
            "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.ppc",
            "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.s390x",
            "5Server:dnsmasq-debuginfo-0:2.45-1.el5_2.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2008:0789"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "bind: implement source UDP port randomization (CERT VU#800113)"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.