high
7.8
CWE
20
Advisory Published
CVE Published
Updated

CVE-2011-2748: Input Validation

First published: Tue Aug 09 2011(Updated: )

The server in ISC DHCP 3.x and 4.x before 4.2.2, 3.1-ESV before 3.1-ESV-R3, and 4.1-ESV before 4.1-ESV-R3 allows remote attackers to cause a denial of service (daemon exit) via a crafted DHCP packet.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
ISC DHCP=4.0.2-b2
ISC DHCP=4.1-esv-r3_b1
ISC DHCP=3.0.4-b2
ISC DHCP=3.1.0-b1
ISC DHCP=3.1.0-a3
ISC DHCP=4.1-esv-r3
ISC DHCP=4.1.0
ISC DHCP=3.0.6-rc1
ISC DHCP=4.0.2-b3
ISC DHCP=4.1-esv-r2
ISC DHCP=3.1.2-rc1
ISC DHCP=4.1.1-rc1
ISC DHCP=4.2.0-b2
ISC DHCP=3.1.0-rc1
ISC DHCP=3.0.4-b1
ISC DHCP=4.0.2-b1
ISC DHCP=3.1.0-a1
ISC DHCP=3.0.1-rc12
ISC DHCP=3.0
ISC DHCP=3.0.2-b1
ISC DHCP=3.0.3-b1
ISC DHCP=4.2.0-a2
ISC DHCP=4.1.1-b2
ISC DHCP=3.0.1-rc1
ISC DHCP=3.0.4-b3
ISC DHCP=3.0.2-rc1
ISC DHCP=4.0.1-rc1
ISC DHCP=4.2.0-b1
ISC DHCP=4.2.1-rc1
ISC DHCP=3.0.1-rc7
ISC DHCP=3.1-esv
ISC DHCP=3.0.2-rc3
ISC DHCP=4.2.0-a1
ISC DHCP=3.0.1-rc2
ISC DHCP=4.0.1-b1
ISC DHCP=3.1.3-b1
ISC DHCP=3.0.1-rc14
ISC DHCP=4.0.2-rc1
ISC DHCP=3.0.1-rc6
ISC DHCP=3.0.2-rc2
ISC DHCP=3.0.1-rc13
ISC DHCP=4.0.3-rc1
ISC DHCP=3.0.1-rc9
ISC DHCP=3.0.3-b3
ISC DHCP=3.1.1-rc1
ISC DHCP=3.1.0-a2
ISC DHCP=3.0.1-rc8
ISC DHCP=4.0.0
ISC DHCP=3.0.3-b2
ISC DHCP=4.1.1-b3
ISC DHCP=3.1
ISC DHCP=4.0.3-b1
ISC DHCP=4.1-esv-r1
ISC DHCP=4.1.1-b1
ISC DHCP=4.1-esv-rc1
ISC DHCP=3.1.2-b1
ISC DHCP=4.2.1-b1
ISC DHCP=4.2.0-rc1
ISC DHCP=3.1.3-rc1
ISC DHCP=4.0
ISC DHCP=3.0.1-rc10
ISC DHCP=4.0-esv
ISC DHCP=4.2.0-p1
ISC DHCP=3.0.5-rc1
ISC DHCP=3.0.1-rc11
ISC DHCP=3.1.1-rc2
ISC DHCP=3.0.4-rc1
ISC DHCP=3.1.0-b2
ISC DHCP=3.0.1-rc5
ISC DHCP=4.1.2
ISC DHCP=3.0.1
ISC DHCP=3.0.2
ISC DHCP=3.0.4
ISC DHCP=3.0.5
ISC DHCP=3.1.0
ISC DHCP=3.1.1
ISC DHCP=3.1.2
ISC DHCP=3.1.3
ISC DHCP=4.0.1
ISC DHCP=4.0.2
ISC DHCP=4.0.3
ISC DHCP=4.1-esv
ISC DHCP=4.1.1
ISC DHCP=4.2.0
ISC DHCP=4.2.1
Ubuntu=10.10
Ubuntu=11.04
Ubuntu=8.04
Ubuntu=10.04
Debian Linux=5.0
Debian Linux=7.0
Debian Linux=6.0

Remedy

http://www.isc.org/software/dhcp/advisories/cve-2011-2748

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-2748?

    CVE-2011-2748 is classified as a denial of service vulnerability affecting various versions of the ISC DHCP server.

  • How do I fix CVE-2011-2748?

    To fix CVE-2011-2748, upgrade to ISC DHCP version 4.2.2 or later, or apply any relevant patches provided by your Linux distribution.

  • Which versions of ISC DHCP are affected by CVE-2011-2748?

    CVE-2011-2748 affects ISC DHCP versions 3.x and 4.x prior to 4.2.2, including several specific ESV and RC versions.

  • Can CVE-2011-2748 be exploited remotely?

    Yes, CVE-2011-2748 can be exploited remotely through specially crafted DHCP packets, potentially leading to server crashes.

  • What are the implications of CVE-2011-2748 for users?

    The implications of CVE-2011-2748 for users include outages due to the DHCP server exiting unexpectedly, disrupting network services.

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