Apache/Tomcat Mod_JK Chunked Encoding Denial Of Service Vulnerability

BID:6320

Info

Apache/Tomcat Mod_JK Chunked Encoding Denial Of Service Vulnerability

Bugtraq ID: 6320
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: No
Published: Dec 04 2002 12:00AM
Updated: Dec 04 2002 12:00AM
Credit: Discovery of this vulnerability is credited to Qualys Security.
Vulnerable: IBM HTTP Server 1.3.19
- HP HP-UX 11.0
- IBM AIX 4.3.3
- Microsoft Windows NT 4.0 SP6a
 - Microsoft Windows NT 4.0 SP5
 - Microsoft Windows NT 4.0 SP4
 - Redhat Linux 7.1
- Sun Solaris 7.0
 - Sun Solaris 2.6
 - SuSE Linux 7.1
Apache Tomcat 4.1.12
Apache Tomcat 4.1.10
Apache Tomcat 4.1
- BSDI BSD/OS 4.0
- Caldera OpenLinux 2.4
- Debian Linux 2.3
- Debian Linux 2.2
- Debian Linux 2.1
- Digital UNIX 4.0
- FreeBSD FreeBSD 5.0
- FreeBSD FreeBSD 4.5
- Mandriva Linux Mandrake 7.1
- Mandriva Linux Mandrake 7.0
- NetBSD NetBSD 1.4.2 x86
 - NetBSD NetBSD 1.4.1 x86
 - Redhat Linux 6.2 i386
 - Redhat Linux 6.1 i386
 - SGI IRIX 6.5
- SGI IRIX 6.4
- SGI IRIX 3.3
- Sun Solaris 8_sparc
 - Sun Solaris 7.0
 Apache Tomcat 4.0.5
+ Redhat Stronghold 4.0
Apache Tomcat 4.0.4
Apache Tomcat 4.0.3
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 Apache Tomcat 4.0.2
Apache Tomcat 4.0.1
- BSDI BSD/OS 4.0
- Caldera OpenLinux 2.4
- Debian Linux 2.2
- Debian Linux 2.1
- Digital UNIX 4.0
- FreeBSD FreeBSD 5.0
- FreeBSD FreeBSD 4.0
- Mandriva Linux Mandrake 7.1
- Mandriva Linux Mandrake 7.0
- NetBSD NetBSD 1.4.2 x86
 - NetBSD NetBSD 1.4.1 x86
 - Redhat Linux 6.2 i386
 - Redhat Linux 6.1 i386
 - SGI IRIX 6.5
- SGI IRIX 6.4
- SGI IRIX 3.3
- Sun Solaris 8_sparc
 - Sun Solaris 7.0
 Apache Tomcat 4.0
- BSDI BSD/OS 4.0
- Caldera OpenLinux 2.4
- Debian Linux 2.2
- Debian Linux 2.1
- Digital UNIX 4.0
- FreeBSD FreeBSD 5.0
- FreeBSD FreeBSD 4.0
- Mandriva Linux Mandrake 7.1
- Mandriva Linux Mandrake 7.0
- NetBSD NetBSD 1.4.2 x86
 - NetBSD NetBSD 1.4.1 x86
 - Redhat Linux 6.2 i386
 - Redhat Linux 6.1 i386
 - SGI IRIX 6.5
- SGI IRIX 6.4
- Sun Solaris 8_sparc
 - Sun Solaris 7.0
 Apache mod_jk 1.2
Apache Apache 1.3.27
+ HP HP-UX (VVOS) 11.0 4
 + HP VirtualVault 4.6
+ HP VirtualVault 4.5
+ HP Webproxy 2.0
+ Immunix Immunix OS 7+
 + Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
+ OpenBSD OpenBSD 3.3
 + OpenPKG OpenPKG Current
 + Redhat Enterprise Linux AS 2.1 IA64
 + Redhat Enterprise Linux AS 2.1
 + Redhat Enterprise Linux ES 2.1 IA64
 + Redhat Enterprise Linux ES 2.1
 + Redhat Enterprise Linux WS 2.1 IA64
 + Redhat Enterprise Linux WS 2.1
 + Redhat Linux Advanced Work Station 2.1
+ SGI IRIX 6.5.19
Apache Apache 1.3.26
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ Mandriva Linux Mandrake 9.0
+ OpenPKG OpenPKG 1.1
+ Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
Apache Apache 1.3.25
Apache Apache 1.3.24
+ OpenBSD OpenBSD 3.1
 + Oracle Oracle HTTP Server 9.2 .0
 + Oracle Oracle HTTP Server 9.0.1
+ Oracle Oracle9i Application Server 9.0.2
+ Oracle Oracle9i Application Server 1.0.2 .2
 + Oracle Oracle9i Application Server 1.0.2 .1s
 + Oracle Oracle9i Application Server 1.0.2
+ Slackware Linux 8.1
+ Unisphere Networks SDX-300 2.0.3
Apache Apache 1.3.23
- IBM AIX 4.3
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
+ Redhat Linux 7.3 i386
 + Redhat Linux 7.3
+ SuSE Linux 8.0 i386
 + SuSE Linux 8.0
+ Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
Apache Apache 1.3.22
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ MandrakeSoft Corporate Server 1.0.1
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ OpenPKG OpenPKG 1.0
+ Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 Apache Apache 1.3.20
- HP HP-UX 11.22
- HP HP-UX 11.20
+ MandrakeSoft Single Network Firewall 7.2
+ SGI IRIX 6.5.18
+ SGI IRIX 6.5.17
+ SGI IRIX 6.5.16
+ SGI IRIX 6.5.15
+ SGI IRIX 6.5.14 m
 + SGI IRIX 6.5.14 f
 + SGI IRIX 6.5.14
+ SGI IRIX 6.5.13 m
 + SGI IRIX 6.5.13 f
 + SGI IRIX 6.5.13
+ SGI IRIX 6.5.12 m
 + SGI IRIX 6.5.12 f
 + SGI IRIX 6.5.12
+ Slackware Linux 8.0
+ Sun Cobalt Control Station 4100CS
+ Sun Cobalt RaQ 550
+ Sun Solaris 9_x86 Update 2
 + Sun Solaris 9_x86
 + Sun Solaris 9
 + Sun SunOS 5.9 _x86
 + Sun SunOS 5.9
+ SuSE Linux 7.3 sparc
 + SuSE Linux 7.3 ppc
 + SuSE Linux 7.3 i386
 + SuSE Linux 7.3
Apache Apache 1.3.19
- Apple Mac OS X 10.0.3
- Caldera OpenLinux 2.4
+ Debian Linux 2.3
- Digital (Compaq) TRU64/DIGITAL UNIX 5.0
- Digital (Compaq) TRU64/DIGITAL UNIX 4.0 g
 - Digital (Compaq) TRU64/DIGITAL UNIX 4.0 f
 + EnGarde Secure Linux 1.0.1
- FreeBSD FreeBSD 4.2
- FreeBSD FreeBSD 3.5.1
- HP HP-UX 11.11
- HP HP-UX 11.0 4
 - HP HP-UX 11.0
- HP HP-UX 10.20
+ HP Secure OS software for Linux 1.0
- HP VirtualVault 4.5
+ Mandriva Linux Mandrake 8.1
- Mandriva Linux Mandrake 8.0
- Mandriva Linux Mandrake 7.2
- Mandriva Linux Mandrake 7.1
- NetBSD NetBSD 1.5.1
- NetBSD NetBSD 1.5
+ OpenBSD OpenBSD 2.9
- OpenBSD OpenBSD 2.8
+ OpenBSD OpenBSD 3.0
 - Redhat Linux 7.1
- Redhat Linux 7.0
- Redhat Linux 6.2
 - SCO eDesktop 2.4
- SCO eServer 2.3.1
- SGI IRIX 6.5.9
- SGI IRIX 6.5.8
- Sun Solaris 8_sparc
 - Sun Solaris 7.0
 + SuSE Linux 7.2 i386
 + SuSE Linux 7.2
+ SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 + SuSE Linux 7.0
+ SuSE Linux 6.4 ppc
 + SuSE Linux 6.4 i386
 + SuSE Linux 6.4 alpha
 + SuSE Linux 6.4
Apache Apache 1.3.18
Apache Apache 1.3.17
+ MandrakeSoft Corporate Server 1.0.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ OpenBSD OpenBSD 2.8
+ SuSE Linux 7.1
Apache Apache 1.3.14
+ EnGarde Secure Linux 1.0.1
- MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ SGI IRIX 6.5.11
+ SGI IRIX 6.5.10
+ SGI IRIX 6.5.9
+ SGI IRIX 6.5.8
+ SGI IRIX 6.5.7
+ SGI IRIX 6.5.6
+ SGI IRIX 6.5.5
+ SGI IRIX 6.5.4
+ SGI IRIX 6.5.3
+ SGI IRIX 6.5.2
+ SGI IRIX 6.5.1
+ SGI IRIX 6.5
Apache Apache 1.3.12
+ NetScreen NetScreen-Global PRO Express Policy Manager Server
+ NetScreen NetScreen-Global PRO Policy Manager Server
+ OpenBSD OpenBSD 2.8
+ Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + Sun Cobalt ManageRaQ v2 3599BD
+ Sun Cobalt Qube3 4000WG
+ Sun Cobalt RaQ XTR 3500R
+ Sun Cobalt RaQ4 3001R
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0
Apache Apache 1.3.11
Apache Apache 1.3
+ Apple Mac OS X 10.3.2
+ Apple Mac OS X 10.3.1
+ Apple Mac OS X 10.3
+ Apple Mac OS X 10.2.8
+ Apple Mac OS X 10.2.7
+ Apple Mac OS X 10.2.6
+ Apple Mac OS X 10.2.5
+ Apple Mac OS X 10.2.4
+ Apple Mac OS X 10.2.3
+ Apple Mac OS X 10.2.2
+ Apple Mac OS X 10.2.1
+ Apple Mac OS X 10.2
+ Apple Mac OS X 10.1.5
+ Apple Mac OS X 10.1.4
+ Apple Mac OS X 10.1.3
+ Apple Mac OS X 10.1.2
+ Apple Mac OS X 10.1.1
+ Apple Mac OS X 10.1
+ Apple Mac OS X Server 10.3.2
+ Apple Mac OS X Server 10.3.1
+ Apple Mac OS X Server 10.3
+ Apple Mac OS X Server 10.2.8
+ Apple Mac OS X Server 10.2.7
+ Apple Mac OS X Server 10.2.6
+ Apple Mac OS X Server 10.2.5
+ Apple Mac OS X Server 10.2.4
+ Apple Mac OS X Server 10.2.3
+ Apple Mac OS X Server 10.2.2
+ Apple Mac OS X Server 10.2.1
+ Apple Mac OS X Server 10.2
+ Apple Mac OS X Server 10.1.5
+ Apple Mac OS X Server 10.1.4
+ Apple Mac OS X Server 10.1.3
+ Apple Mac OS X Server 10.1.2
+ Apple Mac OS X Server 10.1.1
+ Apple Mac OS X Server 10.1
- Microsoft Windows 2000 Professional
- Microsoft Windows NT 4.0
Not Vulnerable: Apache mod_jk 1.2.1

Discussion

Apache/Tomcat Mod_JK Chunked Encoding Denial Of Service Vulnerability

Apache Webserver and Tomcat are HTTP servers maintained and distributed by the Apache project. Apache Webserver and Tomcat are available for the Unix, Linux, and Microsoft Windows platforms.

It has been reported that a denial of service exists in Apache Webserver and Tomcat when mod_jk is used. Due to design problems in the module, a user submitting malicious requests to the Apache Webserver may cause desynchronization between Apache and Tomcat. This could be done through malicious chunked encoding requests.

Exploit / POC

Apache/Tomcat Mod_JK Chunked Encoding Denial Of Service Vulnerability

The following proof of concept has been released by -- Sapient2003 - <[email protected]>

Solution / Fix

Apache/Tomcat Mod_JK Chunked Encoding Denial Of Service Vulnerability

Solution:
A fixed version of mod_jk is available:


Apache mod_jk 1.2

References

Apache/Tomcat Mod_JK Chunked Encoding Denial Of Service Vulnerability

References:

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