Linux Kernel 2.4 RTC Handling Routines Memory Disclosure Vulnerability

BID:9154

Info

Linux Kernel 2.4 RTC Handling Routines Memory Disclosure Vulnerability

Bugtraq ID: 9154
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2003-0984
Remote: No
Local: Yes
Published: Dec 04 2003 12:00AM
Updated: Jan 18 2007 02:40AM
Credit: Discovery is credited to Russell King.
Vulnerable: Turbolinux Turbolinux Workstation 8.0
Turbolinux Turbolinux Workstation 7.0
Turbolinux Turbolinux Server 8.0
Turbolinux Turbolinux Server 7.0
Turbolinux Turbolinux Desktop 10.0
Turbolinux Appliance Server Workgroup Edition 1.0
Turbolinux Appliance Server Hosting Edition 1.0
SmoothWall Express 2.0 beta6
SmoothWall Express 2.0 beta
SmoothWall Express 2.0
Linux kernel 2.4.23 -pre9
Linux kernel 2.4.23
+ Trustix Secure Linux 2.0
Linux kernel 2.4.22
+ Devil-Linux Devil-Linux 1.0.5
+ Devil-Linux Devil-Linux 1.0.4
+ Mandriva Linux Mandrake 9.2 amd64
+ Mandriva Linux Mandrake 9.2
+ Redhat Fedora Core1
+ Slackware Linux 9.1
Linux kernel 2.4.21 pre7
Linux kernel 2.4.21 pre4
+ Mandriva Linux Mandrake 9.1 ppc
+ Mandriva Linux Mandrake 9.1
Linux kernel 2.4.21 pre1
Linux kernel 2.4.21
+ Mandriva Linux Mandrake 9.1 ppc
+ Mandriva Linux Mandrake 9.1
+ Redhat Desktop 3.0
+ Redhat Enterprise Linux AS 3
+ Redhat Enterprise Linux ES 3
+ Redhat Enterprise Linux WS 3
+ S.u.S.E. Linux Personal 9.0 x86_64
+ S.u.S.E. Linux Personal 9.0
+ SuSE SUSE Linux Enterprise Server 8
Linux kernel 2.4.20
+ CRUX CRUX Linux 1.0
+ Gentoo Linux 1.4
+ Gentoo Linux 1.2
+ Redhat Linux 9.0 i386
+ Slackware Linux 9.0
+ WOLK WOLK 4.4 s
Linux kernel 2.4.19 -pre6
Linux kernel 2.4.19 -pre5
Linux kernel 2.4.19 -pre4
Linux kernel 2.4.19 -pre3
Linux kernel 2.4.19 -pre2
Linux kernel 2.4.19 -pre1
Linux kernel 2.4.19
+ Conectiva Linux Enterprise Edition 1.0
+ MandrakeSoft Corporate Server 2.1 x86_64
+ MandrakeSoft Corporate Server 2.1
+ MandrakeSoft Multi Network Firewall 2.0
+ Mandriva Linux Mandrake 9.0
+ Slackware Linux -current
+ SuSE Linux 8.1
+ SuSE SUSE Linux Enterprise Server 8
+ SuSE SUSE Linux Enterprise Server 7
Linux kernel 2.4.18 pre-8
Linux kernel 2.4.18 pre-7
Linux kernel 2.4.18 pre-6
Linux kernel 2.4.18 pre-5
Linux kernel 2.4.18 pre-4
Linux kernel 2.4.18 pre-3
Linux kernel 2.4.18 pre-2
Linux kernel 2.4.18 pre-1
Linux kernel 2.4.18 x86
+ Debian Linux 3.0 ia-32
Linux kernel 2.4.18
+ Astaro Security Linux 2.0 23
+ Astaro Security Linux 2.0 16
+ 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
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0
+ Redhat Advanced Workstation for the Itanium Processor 2.1 IA64
+ Redhat Advanced Workstation for the Itanium Processor 2.1
+ Redhat Enterprise Linux AS 2.1 IA64
+ Redhat Linux 8.0
+ Redhat Linux 7.3
+ S.u.S.E. Linux Connectivity Server
+ S.u.S.E. Linux Database Server 0
+ S.u.S.E. Linux Firewall on CD
+ S.u.S.E. Linux Office Server
+ S.u.S.E. Linux Personal 8.2
+ S.u.S.E. SuSE eMail Server 3.1
+ S.u.S.E. SuSE eMail Server III
+ SuSE Linux 8.1
+ SuSE Linux 8.0
+ SuSE Linux 7.3
+ SuSE Linux 7.2
+ SuSE Linux 7.1
+ SuSE Linux Openexchange Server
+ SuSE SUSE Linux Enterprise Server 8
+ SuSE SUSE Linux Enterprise Server 7
+ Turbolinux Turbolinux Server 8.0
+ Turbolinux Turbolinux Server 7.0
+ Turbolinux Turbolinux Workstation 8.0
+ Turbolinux Turbolinux Workstation 7.0
Linux kernel 2.4.17
Linux kernel 2.4.16
+ Sun Cobalt RaQ 550
Linux kernel 2.4.15
Linux kernel 2.4.14
Linux kernel 2.4.13
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Workstation 3.1.1
Linux kernel 2.4.12
Linux kernel 2.4.11
Linux kernel 2.4.10
+ SuSE Linux 7.3
Linux kernel 2.4.9
+ 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 7.2 ia64
+ Redhat Linux 7.2 i386
+ Redhat Linux 7.2 alpha
+ Redhat Linux 7.1 ia64
+ Redhat Linux 7.1 i386
+ Redhat Linux 7.1 alpha
+ Sun Linux 5.0.5
+ Sun Linux 5.0.3
+ Sun Linux 5.0
Linux kernel 2.4.8
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0
Linux kernel 2.4.7
+ Redhat Linux 7.2
+ SuSE Linux 7.2
+ SuSE Linux 7.1
Linux kernel 2.4.6
Linux kernel 2.4.5
+ Slackware Linux 8.0
Linux kernel 2.4.4
+ SuSE Linux 7.2
Linux kernel 2.4.3
+ Mandriva Linux Mandrake 8.0 ppc
+ Mandriva Linux Mandrake 8.0
Linux kernel 2.4.2
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1
+ Redhat Linux 7.1 i386
+ Redhat Linux 7.1 alpha
Linux kernel 2.4.1
Linux kernel 2.4 .0-test9
Linux kernel 2.4 .0-test8
Linux kernel 2.4 .0-test7
Linux kernel 2.4 .0-test6
Linux kernel 2.4 .0-test5
Linux kernel 2.4 .0-test4
Linux kernel 2.4 .0-test3
Linux kernel 2.4 .0-test2
Linux kernel 2.4 .0-test12
Linux kernel 2.4 .0-test11
Linux kernel 2.4 .0-test10
Linux kernel 2.4 .0-test1
Linux kernel 2.4
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
Debian Linux 3.0
Avaya Communication Manager Server S8700
Avaya Communication Manager Server S8500
Avaya Communication Manager Server S8300
Not Vulnerable: Linux kernel 2.4.24

Discussion

Linux Kernel 2.4 RTC Handling Routines Memory Disclosure Vulnerability

The Linux kernel 2.4 tree has been reported prone to a memory-disclosure vulnerability. The issue is reported to present itself in kernel realtime clock (RTC) interface procedures and may result in kernel memory stack data being leaked into userland. The problem stems from an internal RTC structure that isn't properly initialized with zeros before being read, potentially returning random contents of kernel stack memory when this operation occurs. This could expose sensitive information such as credentials to unprivileged users.

Exploit / POC

Linux Kernel 2.4 RTC Handling Routines Memory Disclosure Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected]

Solution / Fix

Linux Kernel 2.4 RTC Handling Routines Memory Disclosure Vulnerability

Solution:
This issue has been addressed in the 2.4.24 release of the Linux kernel.

Please see the referenced advisories for information on obtaining and applying the appropriate updates.


SmoothWall Express 2.0 beta

SmoothWall Express 2.0 beta6

Linux kernel 2.4 .0-test3

Linux kernel 2.4 .0-test6

Linux kernel 2.4 .0-test8

Linux kernel 2.4 .0-test7

Linux kernel 2.4

Linux kernel 2.4 .0-test2

Linux kernel 2.4 .0-test11

Linux kernel 2.4 .0-test10

Linux kernel 2.4 .0-test4

Linux kernel 2.4 .0-test5

Linux kernel 2.4 .0-test1

Linux kernel 2.4 .0-test12

Linux kernel 2.4 .0-test9

Linux kernel 2.4.1

Linux kernel 2.4.10

Linux kernel 2.4.11

Linux kernel 2.4.12

Linux kernel 2.4.13

Linux kernel 2.4.14

Linux kernel 2.4.15

Linux kernel 2.4.16

Linux kernel 2.4.17

Linux kernel 2.4.18 pre-8

Linux kernel 2.4.18 pre-7

Linux kernel 2.4.18

Linux kernel 2.4.18 pre-6

Linux kernel 2.4.18 pre-3

Linux kernel 2.4.18 pre-2

Linux kernel 2.4.18 pre-4

Linux kernel 2.4.18 pre-5

Linux kernel 2.4.18 x86

Linux kernel 2.4.18 pre-1

Linux kernel 2.4.19 -pre4

Linux kernel 2.4.19 -pre1

Linux kernel 2.4.19 -pre6

Linux kernel 2.4.19 -pre2

Linux kernel 2.4.19

Linux kernel 2.4.19 -pre5

Linux kernel 2.4.19 -pre3

Linux kernel 2.4.2

Linux kernel 2.4.20

Linux kernel 2.4.21

Linux kernel 2.4.21 pre1

Linux kernel 2.4.21 pre4

Linux kernel 2.4.21 pre7

Linux kernel 2.4.22

Linux kernel 2.4.23

Linux kernel 2.4.23 -pre9

Linux kernel 2.4.3

Linux kernel 2.4.4

Linux kernel 2.4.5

Linux kernel 2.4.6

Linux kernel 2.4.7

Linux kernel 2.4.8

Linux kernel 2.4.9

References

Linux Kernel 2.4 RTC Handling Routines Memory Disclosure Vulnerability

References:

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