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Title: ISC BIND Remote Fetch Context Denial of Service Vulnerability

Severity: MODERATE

Description:

ISC BIND is prone to a remote denial-of-service vulnerability because it fails to properly handle unexpected DNS requests.

Specifically, malicious requests may cause the software to attempt to dereference a previously freed memory region used for a fetch context. This will potentially trigger a crash in the application.

Successfully exploiting this issue allows remote attackers to crash affected DNS servers, denying further service to legitimate users.

Affected Products:

• Apple Mac OS X 10.3.0
• Apple Mac OS X 10.3.1
• Apple Mac OS X 10.3.2
• Apple Mac OS X 10.3.3
• Apple Mac OS X 10.3.4
• Apple Mac OS X 10.3.5
• Apple Mac OS X 10.3.6
• Apple Mac OS X 10.3.7
• Apple Mac OS X 10.3.8
• Apple Mac OS X 10.3.9
• Apple Mac OS X 10.4.0
• Apple Mac OS X 10.4.1
• Apple Mac OS X 10.4.2
• Apple Mac OS X 10.4.3
• Apple Mac OS X 10.4.4
• Apple Mac OS X 10.4.5
• Apple Mac OS X 10.4.6
• Apple Mac OS X 10.4.7
• Apple Mac OS X 10.4.8
• Apple Mac OS X 10.4.9
• Apple Mac OS X Server 10.3.0
• Apple Mac OS X Server 10.3.1
• Apple Mac OS X Server 10.3.2
• Apple Mac OS X Server 10.3.3
• Apple Mac OS X Server 10.3.4
• Apple Mac OS X Server 10.3.5
• Apple Mac OS X Server 10.3.6
• Apple Mac OS X Server 10.3.7
• Apple Mac OS X Server 10.3.8
• Apple Mac OS X Server 10.3.9
• Apple Mac OS X Server 10.4.0
• Apple Mac OS X Server 10.4.1
• Apple Mac OS X Server 10.4.2
• Apple Mac OS X Server 10.4.3
• Apple Mac OS X Server 10.4.4
• Apple Mac OS X Server 10.4.5
• Apple Mac OS X Server 10.4.6
• Apple Mac OS X Server 10.4.7
• Apple Mac OS X Server 10.4.8
• Apple Mac OS X Server 10.4.9
• Caldera OpenUnix 8.0.0
• Conectiva Linux 8.0.0
• FreeBSD FreeBSD 5.3.0
• FreeBSD FreeBSD 5.3.0 -RELEASE
• FreeBSD FreeBSD 5.3.0 -RELENG
• FreeBSD FreeBSD 5.3.0 -STABLE
• FreeBSD FreeBSD 5.4-STABLE
• FreeBSD FreeBSD 5.4.0 -PRERELEASE
• FreeBSD FreeBSD 5.4.0 -RELEASE
• FreeBSD FreeBSD 5.4.0 -RELENG
• FreeBSD FreeBSD 5.5.0 -RELEASE
• FreeBSD FreeBSD 5.5.0 -STABLE
• FreeBSD FreeBSD 6.0 -RELEASE-p5
• FreeBSD FreeBSD 6.0.0 -RELEASE
• FreeBSD FreeBSD 6.0.0 -STABLE
• FreeBSD FreeBSD 6.0.0 .x
• FreeBSD FreeBSD 6.1 -RELEASE
• FreeBSD FreeBSD 6.1 -RELEASE-p10
• FreeBSD FreeBSD 6.1 -STABLE
• FreeBSD FreeBSD 6.2
• FreeBSD FreeBSD 6.2 -STABLE
• Gentoo Linux
• HP HP-UX 11.0.0
• HP HP-UX 11.11.0
• HP HP-UX B.11.11
• HP HP-UX B.11.23
• HP Internet Express IX BIND 6.6
• HP Tru64 4.0.0 F PK8
• HP Tru64 4.0.0 G PK4
• HP Tru64 5.1.0 A PK6
• HP Tru64 5.1.0 B-3
• HP Tru64 5.1.0 B-4
• ISC BIND 9.2.0
• ISC BIND 9.2.1
• ISC BIND 9.2.2
• ISC BIND 9.2.3
• ISC BIND 9.2.4
• ISC BIND 9.2.5
• ISC BIND 9.2.6
• ISC BIND 9.2.6-P1
• ISC BIND 9.2.6-P2
• ISC BIND 9.2.7
• ISC BIND 9.2.7b1
• ISC BIND 9.2.7rc1
• ISC BIND 9.2.7rc2
• ISC BIND 9.2.7rc3
• ISC BIND 9.3.0
• ISC BIND 9.3.1
• ISC BIND 9.3.2
• ISC BIND 9.3.2-P1
• ISC BIND 9.3.2-P2
• ISC BIND 9.3.3
• ISC BIND 9.3.3 b
• ISC BIND 9.3.3 rc1
• ISC BIND 9.3.3 rc1
• ISC BIND 9.3.3b1
• ISC BIND 9.3.3rc2
• ISC BIND 9.3.3rc3
• ISC BIND 9.4.0a1
• ISC BIND 9.4.0a2
• ISC BIND 9.4.0a3
• ISC BIND 9.4.0a4
• ISC BIND 9.4.0a5
• ISC BIND 9.4.0a6
• ISC BIND 9.4.0b1
• ISC BIND 9.4.0b2
• ISC BIND 9.4.0b3
• ISC BIND 9.4.0b4
• ISC BIND 9.4.0rc1
• ISC BIND 9.5.0a1
• Linux kernel 2.4.19
• Linux kernel 2.4.21
• Linux kernel 2.6.5
• MandrakeSoft Corporate Server 3.0.0
• MandrakeSoft Corporate Server 3.0.0 x86_64
• MandrakeSoft Corporate Server 4.0
• MandrakeSoft Corporate Server 4.0.0 x86_64
• MandrakeSoft Linux Mandrake 2006.0.0
• MandrakeSoft Linux Mandrake 2006.0.0 x86_64
• MandrakeSoft Linux Mandrake 2007.0
• MandrakeSoft Linux Mandrake 2007.0 x86_64
• MandrakeSoft Linux Mandrake 7.2.0
• MandrakeSoft Linux Mandrake 8.1.0
• MandrakeSoft Linux Mandrake 8.1.0 ia64
• MandrakeSoft Linux Mandrake 8.2.0
• MandrakeSoft Single Network Firewall 7.2.0
• NetBSD NetBSD 2.0.0
• NetBSD NetBSD 2.0.1
• NetBSD NetBSD 2.0.2
• NetBSD NetBSD 2.0.3
• NetBSD NetBSD 2.0.4
• NetBSD NetBSD 2.1.0
• NetBSD NetBSD 2.1.1
• NetBSD NetBSD 3,1_RC1
• NetBSD NetBSD 3.0.0
• NetBSD NetBSD 3.0.1
• NetBSD NetBSD 3.0.2
• NetBSD NetBSD 3.1
• NetBSD NetBSD 3.1
• NetBSD NetBSD 3.1_RC3
• NetBSD NetBSD 4,0_Beta
• NetBSD NetBSD 4.0
• NetBSD NetBSD 4.0 BETA2
• OpenPKG OpenPKG 2-Stable-20061018
• OpenPKG OpenPKG Current
• OpenPKG OpenPKG E1.0-Solid
• OpenPKG OpenPKG Stable
• RedHat Enterprise Linux 5 server
• RedHat Enterprise Linux Desktop 5 client
• RedHat Enterprise Linux Desktop Workstation 5 client
• RedHat Fedora Core5
• RedHat Fedora Core6
• RedHat Linux 7.3.0
• RedHat Linux 7.3.0 i386
• S.u.S.E. Linux 9.3 x86
• S.u.S.E. Linux 9.3 x86-64
• S.u.S.E. Linux Enterprise Server 8
• S.u.S.E. Linux Enterprise Server 9
• S.u.S.E. Linux Personal 10.0.0 OSS
• S.u.S.E. Linux Personal 10.1
• S.u.S.E. Linux Personal 9.3.0
• S.u.S.E. Linux Personal 9.3.0 x86_64
• S.u.S.E. Linux Professional 10.0.0
• S.u.S.E. Linux Professional 10.0.0 OSS
• S.u.S.E. Linux Professional 10.1
• S.u.S.E. Linux Professional 9.3.0
• S.u.S.E. Linux Professional 9.3.0 x86_64
• S.u.S.E. Novell Linux Desktop 9
• S.u.S.E. Novell Linux POS 9
• S.u.S.E. Open-Enterprise-Server
• S.u.S.E. SUSE LINUX Retail Solution 8.0.0
• S.u.S.E. SUSE Linux Enterprise Desktop 10
• S.u.S.E. SUSE Linux Enterprise Server 10
• S.u.S.E. SuSE Linux Openexchange Server 4.0.0
• S.u.S.E. SuSE Linux School Server for i386
• S.u.S.E. SuSE Linux Standard Server 8.0.0
• S.u.S.E. UnitedLinux 1.0.0
• S.u.S.E. openSUSE 10.2
• SCO Unixware 7.1.3
• Slackware Linux 10.0.0
• Slackware Linux 10.1.0
• Slackware Linux 10.2.0
• Slackware Linux 11.0
• Slackware Linux 8.1.0
• Slackware Linux 9.0.0
• Slackware Linux 9.1.0
• Ubuntu Ubuntu Linux 5.10.0 amd64
• Ubuntu Ubuntu Linux 5.10.0 i386
• Ubuntu Ubuntu Linux 5.10.0 powerpc
• Ubuntu Ubuntu Linux 5.10.0 sparc
• Ubuntu Ubuntu Linux 6.06 LTS amd64
• Ubuntu Ubuntu Linux 6.06 LTS i386
• Ubuntu Ubuntu Linux 6.06 LTS powerpc
• Ubuntu Ubuntu Linux 6.06 LTS sparc
• Ubuntu Ubuntu Linux 6.10 amd64
• Ubuntu Ubuntu Linux 6.10 i386
• Ubuntu Ubuntu Linux 6.10 powerpc
• Ubuntu Ubuntu Linux 6.10 sparc
• rPath rPath Linux 1

References:

• HP: HPSBTU02207 SSRT061213, SSRT061239, SSRT071304 rev.1 - HP Tru64 UNIX SSL and BIN
• ISC: BIND 9.2.8 is now available.
• ISC: BIND 9.3.4 is now available.
• ISC: BIND 9.4.0rc2 is now available.
• ISC: BIND Security
• ISC: ISC BIND
• ISC: Internet Systems Consortium Security Advisory.
• Red Hat: RHSA-2007:0057-3 bind security update

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