KSirc IRC Client Remote PRIVMSG Denial of Service Vulnerability

BID:21790

Info

KSirc IRC Client Remote PRIVMSG Denial of Service Vulnerability

Bugtraq ID: 21790
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2006-6811
Remote: Yes
Local: No
Published: Dec 27 2006 12:00AM
Updated: Mar 14 2007 08:04PM
Credit: Discovery is credited to Federico L. Bossi Bonin <[email protected]>.
Vulnerable: Ubuntu Ubuntu Linux 5.10 sparc
Ubuntu Ubuntu Linux 5.10 powerpc
Ubuntu Ubuntu Linux 5.10 i386
Ubuntu Ubuntu Linux 5.10 amd64
Ubuntu Ubuntu Linux 6.10 sparc
Ubuntu Ubuntu Linux 6.10 powerpc
Ubuntu Ubuntu Linux 6.10 i386
Ubuntu Ubuntu Linux 6.10 amd64
Ubuntu Ubuntu Linux 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
Turbolinux FUJI 0
rPath rPath Linux 1
Mandriva Linux Mandrake 2007.0 x86_64
Mandriva Linux Mandrake 2007.0
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
KDE KSirc 1.3.12
KDE KDE 3.5.5
KDE KDE 3.5.4
KDE KDE 3.5.3
KDE KDE 3.5.2
KDE KDE 3.5.1
KDE KDE 3.5
KDE KDE 3.4.3
KDE KDE 3.4.2
KDE KDE 3.4.1
+ Redhat Fedora Core4
KDE KDE 3.4
KDE KDE 3.4
KDE KDE 3.3.2
+ Debian Linux 3.1 sparc
+ Debian Linux 3.1 s/390
+ Debian Linux 3.1 s/390
+ Debian Linux 3.1 s/390
+ Debian Linux 3.1 ppc
+ Debian Linux 3.1 ppc
+ Debian Linux 3.1 ppc
+ Debian Linux 3.1 mipsel
+ Debian Linux 3.1 mipsel
+ Debian Linux 3.1 mipsel
+ Debian Linux 3.1 mips
+ Debian Linux 3.1 mips
+ Debian Linux 3.1 mips
+ Debian Linux 3.1 m68k
+ Debian Linux 3.1 m68k
+ Debian Linux 3.1 m68k
+ Debian Linux 3.1 ia-64
+ Debian Linux 3.1 ia-64
+ Debian Linux 3.1 ia-64
+ Debian Linux 3.1 ia-32
+ Debian Linux 3.1 ia-32
+ Debian Linux 3.1 ia-32
+ Debian Linux 3.1 hppa
+ Debian Linux 3.1 hppa
+ Debian Linux 3.1 hppa
+ Debian Linux 3.1 arm
+ Debian Linux 3.1 arm
+ Debian Linux 3.1 arm
+ Debian Linux 3.1 amd64
+ Debian Linux 3.1 amd64
+ Debian Linux 3.1 amd64
+ Debian Linux 3.1 alpha
+ Debian Linux 3.1 alpha
+ Debian Linux 3.1 alpha
+ Debian Linux 3.1
+ Debian Linux 3.1
+ Debian Linux 3.1
KDE KDE 3.3.2
KDE KDE 3.3.1
+ Redhat Fedora Core3
KDE KDE 3.3
KDE KDE 3.2.3
KDE KDE 3.2.2
+ KDE KDE 3.2.2
+ Redhat Fedora Core2
KDE KDE 3.2.1
KDE KDE 3.2
KDE KDE 3.1.5
KDE KDE 3.1.4
KDE KDE 3.1.3
+ Redhat Desktop 3.0
+ Redhat Desktop 3.0
+ Redhat Enterprise Linux AS 3
+ Redhat Enterprise Linux AS 3
+ Redhat Enterprise Linux ES 3
+ Redhat Enterprise Linux ES 3
+ Redhat Enterprise Linux WS 3
KDE KDE 3.1.2
+ KDE KDE 3.1.2
KDE KDE 3.1.1 a
KDE KDE 3.1.1
+ S.u.S.E. Linux Personal 8.2
+ S.u.S.E. Linux Personal 8.2
KDE KDE 3.1
+ Redhat Linux 9.0 i386
+ SuSE Linux 8.1
+ SuSE Linux 8.1
KDE KDE 3.0.5 b
KDE KDE 3.0.5 a
+ Redhat Linux 8.0 i386
+ Redhat Linux 7.3 i386
+ Redhat Linux 7.3 i386
KDE KDE 3.0.5
KDE KDE 3.0.4
+ Gentoo Linux 1.4 _rc1
+ Gentoo Linux 1.2
+ Gentoo Linux 1.2
KDE KDE 3.0.3 a
KDE KDE 3.0.3
+ Conectiva Linux Enterprise Edition 1.0
+ FreeBSD FreeBSD 4.7 -STABLE
+ FreeBSD FreeBSD 4.7 -STABLE
+ Mandriva Linux Mandrake 9.0
+ Mandriva Linux Mandrake 9.0
KDE KDE 3.0.2
+ Mandriva Linux Mandrake 8.2
KDE KDE 3.0.1
KDE KDE 3.0
KDE KDE 2.2.2
+ Debian Linux 3.0 sparc
+ Debian Linux 3.0 sparc
+ Debian Linux 3.0 s/390
+ Debian Linux 3.0 s/390
+ Debian Linux 3.0 ppc
+ Debian Linux 3.0 ppc
+ Debian Linux 3.0 mipsel
+ Debian Linux 3.0 mipsel
+ Debian Linux 3.0 mips
+ Debian Linux 3.0 mips
+ Debian Linux 3.0 m68k
+ Debian Linux 3.0 m68k
+ Debian Linux 3.0 ia-64
+ Debian Linux 3.0 ia-64
+ Debian Linux 3.0 ia-32
+ Debian Linux 3.0 ia-32
+ Debian Linux 3.0 hppa
+ Debian Linux 3.0 hppa
+ Debian Linux 3.0 arm
+ Debian Linux 3.0 arm
+ Debian Linux 3.0 alpha
+ Debian Linux 3.0 alpha
+ Debian Linux 3.0
+ Debian Linux 3.0
+ Debian Linux 2.2 sparc
+ Debian Linux 2.2 powerpc
+ Debian Linux 2.2 IA-32
+ Debian Linux 2.2 arm
+ Debian Linux 2.2 alpha
+ Debian Linux 2.2 68k
+ Debian Linux 2.2
+ Mandriva Linux Mandrake 8.2 ppc
+ Mandriva Linux Mandrake 8.2 ppc
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.1
+ Redhat Advanced Workstation for the Itanium Processor 2.1
+ Redhat Enterprise Linux AS 2.1 IA64
+ Redhat Enterprise Linux AS 2.1 IA64
+ Redhat Enterprise Linux AS 2.1
+ Redhat Enterprise Linux AS 2.1
+ Redhat Enterprise Linux ES 2.1 IA64
+ Redhat Enterprise Linux ES 2.1 IA64
+ Redhat Enterprise Linux ES 2.1
+ Redhat Enterprise Linux ES 2.1
+ Redhat Enterprise Linux WS 2.1 IA64
+ Redhat Enterprise Linux WS 2.1 IA64
+ Redhat Enterprise Linux WS 2.1
+ Redhat Enterprise Linux WS 2.1
+ Redhat Linux 7.2 ia64
+ Redhat Linux 7.2 ia64
+ Redhat Linux 7.2 i386
+ Redhat Linux 7.2 i386
+ Redhat Linux 7.1 i386
+ Redhat Linux 7.1 i386
+ Redhat Linux Advanced Work Station 2.1
+ Sun Linux 5.0.7
+ Sun Linux 5.0.7
+ Sun Linux 5.0.6
+ Sun Linux 5.0.6
+ Sun Linux 5.0.5
+ Sun Linux 5.0.5
KDE KDE 2.2.1
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ Caldera OpenLinux Workstation 3.1
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1
KDE KDE 2.2
KDE KDE 2.1.2
KDE KDE 2.1.1
KDE KDE 2.1
KDE KDE 2.0.1
KDE KDE 2.0 BETA
KDE KDE 2.0
KDE KDE 1.2
- SuSE Linux 6.4
KDE KDE 1.1.2
+ Caldera OpenLinux 2.3
+ Mandriva Linux Mandrake 7.0
KDE KDE 1.1.1
KDE KDE 1.1
Gentoo kde-base/ksirc 3.5.5
Not Vulnerable: KDE KDE 3.5.6

Discussion

KSirc IRC Client Remote PRIVMSG Denial of Service Vulnerability

KSirc is prone to a remote denial-of-service vulnerability.

The issue arises when the client handles excessive string data. By exploiting this issue, a remote attacker may cause an affected client to crash.

KSirc 1.3.12 is vulnerable to this issue; other versions may also be affected.

The vendor states this issue cannot be exploited to execute arbitrary code. Successful exploits will, however, result in denial-of-service conditions in the client.

Exploit / POC

KSirc IRC Client Remote PRIVMSG Denial of Service Vulnerability

Proof-of-concept exploit code is available.

Solution / Fix

KSirc IRC Client Remote PRIVMSG Denial of Service Vulnerability

Solution:
The vendor has released updates to address this issue. Please see the referenced vendor advisory for details on obtaining and applying the appropriate updates.


KDE KSirc 1.3.12

KDE KDE 3.4.3

KDE KDE 3.5.2

KDE KDE 3.5.5

References

KSirc IRC Client Remote PRIVMSG Denial of Service Vulnerability

References:
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