Apache Mod_SSL Custom Error Document Remote Denial Of Service Vulnerability

BID:16152

Info

Apache Mod_SSL Custom Error Document Remote Denial Of Service Vulnerability

Bugtraq ID: 16152
Class: Design Error
CVE: CVE-2005-3357
Remote: Yes
Local: No
Published: Dec 12 2005 12:00AM
Updated: May 09 2011 08:12PM
Credit: keilh &amp;lt;[email protected]&amp;gt; reported this issue to the vendor. <br>
Vulnerable: Ubuntu Ubuntu Linux 5.10 powerpc
Ubuntu Ubuntu Linux 5.10 i386
Ubuntu Ubuntu Linux 5.10 amd64
Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 amd64
Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
Turbolinux Turbolinux Server 10.0 x86
Turbolinux Turbolinux Server 10.0
Turbolinux Turbolinux Desktop 10.0
Turbolinux Turbolinux FUJI
Turbolinux Turbolinux 10 F...
TurboLinux Personal
TurboLinux Multimedia
Turbolinux Home
SuSE SUSE Linux Enterprise Server 9
SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
Sun Solaris 10_x86
S.u.S.E. UnitedLinux 1.0
S.u.S.E. tomboy 10.0
S.u.S.E. SuSE Linux Standard Server 8.0
S.u.S.E. SuSE Linux School Server for i386
S.u.S.E. SUSE LINUX Retail Solution 8.0
S.u.S.E. Open-Enterprise-Server 9.0
S.u.S.E. Office Server
S.u.S.E. Novell Linux Desktop 9.0
S.u.S.E. Linux Professional 10.0 OSS
S.u.S.E. Linux Professional 10.0
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Professional 9.0 x86_64
S.u.S.E. Linux Professional 9.0
S.u.S.E. Linux Personal 10.0 OSS
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
S.u.S.E. Linux Enterprise Server for S/390 9.0
S.u.S.E. Linux Enterprise Server for S/390
S.u.S.E. Linux Desktop 1.0
S.u.S.E. Linux Database Server 0
S.u.S.E. Linux Connectivity Server
RedHat Linux 9.0 i386
RedHat Linux 7.3 i386
RedHat Enterprise Linux WS 4
RedHat Enterprise Linux WS 3
RedHat Enterprise Linux ES 4
RedHat Enterprise Linux ES 3
RedHat Enterprise Linux AS 4
RedHat Enterprise Linux AS 3
RedHat Desktop 4.0
RedHat Desktop 3.0
Red Hat Fedora Core4
Red Hat Fedora Core3
Red Hat Fedora Core2
Red Hat Fedora Core1
MandrakeSoft Linux Mandrake 2006.0 x86_64
MandrakeSoft Linux Mandrake 2006.0
MandrakeSoft Linux Mandrake 10.2 x86_64
MandrakeSoft Linux Mandrake 10.2
MandrakeSoft Linux Mandrake 10.1 x86_64
MandrakeSoft Linux Mandrake 10.1
IBM HTTP Server 2.0.47 .1
IBM HTTP Server 2.0.47
IBM HTTP Server 2.0.42 .2
IBM HTTP Server 2.0.42 .1
IBM HTTP Server 2.0.42
IBM Hardware Management Console (HMC) for pSeries 6.0 R1.0
IBM Hardware Management Console (HMC) for iSeries 6.0 R1.0
HP Webproxy A.02.10
+ HP HP-UX B.11.04
 HP VirtualVault 4.7
HP System Management Homepage 2.1.5
HP System Management Homepage 2.1.4
HP System Management Homepage 2.1.3 .132
HP System Management Homepage 2.1.3
HP System Management Homepage 2.1.2
HP System Management Homepage 2.1.1
HP System Management Homepage 2.1
HP System Management Homepage 2.0.2
HP System Management Homepage 2.0.1
HP System Management Homepage 2.0
HP OpenVMS Secure Web Server 1.2
HP OpenVMS Secure Web Server 1.1 -1
HP OpenVMS Secure Web Server 2.1-1
HP OpenView Network Node Manager 7.51
HP OpenView Network Node Manager 7.01
HP OpenView Network Node Manager 6.41
HP HP-UX B.11.23
HP HP-UX B.11.11
HP HP-UX B.11.04
HP HP-UX B.11.00
Gentoo Linux
Conectiva Linux 10.0
Apple Mac OS X Server 10.5.3
Apple Mac OS X Server 10.5.2
Apple Mac OS X Server 10.5.1
Apple Mac OS X Server 10.4.11
Apple Mac OS X Server 10.5
Apple Mac OS X 10.5.3
Apple Mac OS X 10.5.2
Apple Mac OS X 10.5.1
Apple Mac OS X 10.4.11
Apple Mac OS X 10.5
Apache Software Foundation Apache 2.0.55
Apache Software Foundation Apache 2.0.54
+ Debian Linux 3.1 sparc
 + Debian Linux 3.1 s/390
 + Debian Linux 3.1 ppc
 + Debian Linux 3.1 mipsel
 + Debian Linux 3.1 mips
 + Debian Linux 3.1 m68k
 + Debian Linux 3.1 ia-64
 + Debian Linux 3.1 ia-32
 + Debian Linux 3.1 hppa
 + Debian Linux 3.1 arm
 + Debian Linux 3.1 amd64
 + Debian Linux 3.1 alpha
 + Debian Linux 3.1
Apache Software Foundation Apache 2.0.53
Apache Software Foundation Apache 2.0.52
Apache Software Foundation Apache 2.0.51
Apache Software Foundation Apache 2.0.50
Apache Software Foundation Apache 2.0.49
+ S.u.S.E. Linux Personal 9.1
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Apache Software Foundation Apache 2.0.48
+ MandrakeSoft Linux Mandrake 10.0 AMD64
 + MandrakeSoft Linux Mandrake 10.0
+ S.u.S.E. Linux 8.1
+ S.u.S.E. Linux Personal 9.0 x86_64
 + S.u.S.E. Linux Personal 9.0
+ S.u.S.E. Linux Personal 8.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Apache Software Foundation Apache 2.0.47
Apache Software Foundation Apache 2.0.46
Apache Software Foundation Apache 2.0.45
Apache Software Foundation Apache 2.0.44
Apache Software Foundation Apache 2.0.43
Apache Software Foundation Apache 2.0.42
Apache Software Foundation Apache 2.0.41
Apache Software Foundation Apache 2.0.40
+ RedHat Linux 9.0 i386
 + RedHat Linux 8.0
+ Terra Soft Solutions Yellow Dog Linux 3.0
Apache Software Foundation Apache 2.0.39
Apache Software Foundation Apache 2.0.38
Apache Software Foundation Apache 2.0.37
Apache Software Foundation Apache 2.0.36
Apache Software Foundation Apache 2.0.35
Apache Software Foundation Apache 2.0.32
Apache Software Foundation Apache 2.0.28 Beta
Apache Software Foundation Apache 2.0.28
Apache Software Foundation Apache 2.0 a9
Apache Software Foundation Apache 2.0
Not Vulnerable: HP OpenVMS Secure Web Server 2.2

Discussion

Apache Mod_SSL Custom Error Document Remote Denial Of Service Vulnerability

Apache's mod_ssl module is susceptible to a remote denial-of-service vulnerability. A flaw in the module results in a NULL-pointer dereference that causes the server to crash. This issue is present only when virtual hosts are configured with a custom 'ErrorDocument' statement for '400' errors or 'SSLEngine optional'.

Depending on the configuration of Apache, attackers may crash the entire webserver or individual child processes. Repeated attacks are required to deny service to legitimate users when Apache is configured for multiple child processes to handle connections.

This issue affects Apache 2.x versions.

Exploit / POC

Apache Mod_SSL Custom Error Document Remote Denial Of Service Vulnerability

An exploit is not required.

Solution / Fix

Apache Mod_SSL Custom Error Document Remote Denial Of Service Vulnerability

Solution:
Updates are available. Please see the references for more information.


HP Webproxy A.02.10

Apple Mac OS X 10.5

Apple Mac OS X 10.4.11

Apple Mac OS X Server 10.4.11

Apple Mac OS X 10.5.1

Apple Mac OS X 10.5.2

Apple Mac OS X Server 10.5.2

Apple Mac OS X 10.5.3

Apple Mac OS X Server 10.5.3

Apache Software Foundation Apache 2.0.40

Apache Software Foundation Apache 2.0.49

Apache Software Foundation Apache 2.0.53

Apache Software Foundation Apache 2.0.54

References

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