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A bug in joe(1), a userfriendly text editor, was found by Christer Öberg of Wkit Security AB a few weeks ago. After starting joe(1) it tries to open its configuration file joerc in the current directory, the users home directory and some other locations. joe(1) doesn't check the ownership of joerc when trying the current directory. An attacker could place a malicious joerc file in a public writeable directory, like /tmp, to execute commands with the privilege of any user (including root), which runs joe while being in this directory.
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-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SuSE Security Announcement
Package: joe
Announcement-ID: SuSE-SA:2001:09
Date: Tuesday, March 27th, 2001 17.03 MEST
Affected SuSE versions: 6.1, 6.2, 6.3, 6.4, 7.0, 7.1
Vulnerability Type: local privilege escalation
Severity (1-10): 3
SuSE default package: yes
Other affected systems: all system using joe
Content of this advisory:
1) security vulnerability resolved: joe
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
A bug in joe(1), a userfriendly text editor, was found by Christer Öberg
of Wkit Security AB a few weeks ago.
After starting joe(1) it tries to open its configuration file joerc in the
current directory, the users home directory and some other locations.
joe(1) doesn't check the ownership of joerc when trying the current
directory.
An attacker could place a malicious joerc file in a public writeable
directory, like /tmp, to execute commands with the privilege of any user
(including root), which runs joe while being in this directory.
Download the update package from locations desribed below and install
the package with the command `rpm -Uhv file.rpm'. The md5sum for each
file is in the line below. You can verify the integrity of the rpm
files using the command
`rpm --checksig --nogpg file.rpm',
independently from the md5 signatures below.
i386 Intel Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/i386/update/7.1/ap1/joe-2.8-300.i386.rpm
3140f1eb79eb246ad98f7687de517371
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/joe-2.8-300.src.rpm
0c04bb25b8ae452f1fcdfe11af32e1b6
SuSE-7.0
ftp://ftp.suse.com/pub/suse/i386/update/7.0/ap1/joe-2.8-304.i386.rpm
2a406de36322fc7bc28aaeca0bbdf54d
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.0/zq1/joe-2.8-304.src.rpm
2aac0d130597d580d96c75d59397958c
SuSE-6.4
ftp://ftp.suse.com/pub/suse/i386/update/6.4/ap1/joe-2.8-303.i386.rpm
348a5e4a981f76943c77431606e5c3b2
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/joe-2.8-303.src.rpm
9f938aa365460257baf56f5f92f565ee
SuSE-6.3
ftp://ftp.suse.com/pub/suse/i386/update/6.3/ap1/joe-2.8-302.i386.rpm
236ec54a0251859e1c2c1fc4018b5dae
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.3/zq1/joe-2.8-302.src.rpm
49b638dd238cacc8e99048ee5a8024ea
SuSE-6.2
ftp://ftp.suse.com/pub/suse/i386/update/6.2/ap1/joe-2.8-302.i386.rpm
094577b41a2ad5baa0d16f4d53378d0e
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.2/zq1/joe-2.8-302.src.rpm
78333a2bac40b08db1e54ccaf1380caf
SuSE-6.1
ftp://ftp.suse.com/pub/suse/i386/update/6.1/ap1/joe-2.8-305.i386.rpm
72fbb78af21f3878f1ae8b8bc87c96f4
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.1/zq1/joe-2.8-305.src.rpm
b4fbe27a24bf66d60db45da3c3d13020
Sparc Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/sparc/update/7.1/ap1/joe-2.8-290.sparc.rpm
eeb78e413ee0b48d39ccdab29228ae80
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.1/zq1/joe-2.8-290.src.rpm
f29199161ffd38f3f26c82b5d21ba89b
SuSE-7.0
ftp://ftp.suse.com/pub/suse/sparc/update/7.0/ap1/joe-2.8-292.sparc.rpm
d1d70f58df37de53f05734d90be596fa
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/joe-2.8-292.src.rpm
45091ece9cb66e4f093d07b0386fd2b9
AXP Alpha Platform:
SuSE-7.0
ftp://ftp.suse.com/pub/suse/axp/update/7.0/ap1/joe-2.8-296.alpha.rpm
85e609519bbfbbc0be5aec7b8de2dffc
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/7.0/zq1/joe-2.8-296.src.rpm
ce623f8a73b1f6395eb9498324cc1e21
SuSE-6.4
ftp://ftp.suse.com/pub/suse/axp/update/6.4/ap1/joe-2.8-293.alpha.rpm
d930c6a2f0757f51f04409946f6152f8
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.4/zq1/joe-2.8-293.src.rpm
0b20e5bd36f0feeaf78cb4815566e982
SuSE-6.3
ftp://ftp.suse.com/pub/suse/axp/update/6.3/ap1/joe-2.8-293.alpha.rpm
6278e4dd4a42d4e091d1a08e3f617fa2
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.3/zq1/joe-2.8-293.src.rpm
88f428cc9c916b9159dfb54144c7802e
SuSE-6.1
ftp://ftp.suse.com/pub/suse/axp/update/6.1/ap1/joe-2.8-295.alpha.rpm
3e531066b0495be2261f02ef2d4583f0
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.1/zq1/joe-2.8-295.src.rpm
1d7796f1fad01365e40a944f0db84470
PPC PowerPC Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/ppc/update/7.1/ap1/joe-2.8-272.ppc.rpm
f11094b9f1afeb04786030e3a140ed03
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/joe-2.8-272.src.rpm
4058ea46c9d75976a24a6ac419fc19d5
SuSE-7.0
ftp://ftp.suse.com/pub/suse/ppc/update/7.0/ap1/joe-2.8-274.ppc.rpm
c385a2ca601cf9b01ad2d39433d6a872
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.0/zq1/joe-2.8-274.src.rpm
b667ea68d356a9582d3696ad68869c69
SuSE-6.4
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/ap1/joe-2.8-273.ppc.rpm
4f6c2c20e961aea4987381d12692af6c
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/joe-2.8-273.src.rpm
8c3ebda871c54afc11a24d80d207c34e
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
- We are in the process of preparing update packages for the man package
which has been found vulnerable to a commandline format string bug.
The man command is installed suid man on SuSE systems. When exploited,
the bug can be used to install a different man binary to introduce a
trojan into the system. As an interim workaround, we recommend to
`chmod -s /usr/bin/man´ and ignore the warnings and errors when
viewing manpages.
- The file browser MidnightCommander (mc) is vulnerable to unwanted
program execution. Updates are currently being built.
- Two bugs were found in the text editor vim. These bugs are currently
being fixed.
- A bufferoverflow in sudo was discovered and fixed RPMs will be available
as soon as possible. A exploit was not made public until now.
______________________________________________________________________________
3) standard appendix:
SuSE runs two security mailing lists to which any interested party may
subscribe:
suse-security@suse.com
- general/linux/SuSE security discussion.
All SuSE security announcements are sent to this list.
To subscribe, send an email to
<suse-security-subscribe@suse.com>.
suse-security-announce@suse.com
- SuSE's announce-only mailing list.
Only SuSE's security annoucements are sent to this list.
To subscribe, send an email to
<suse-security-announce-subscribe@suse.com>.
For general information or the frequently asked questions (faq)
send mail to:
<suse-security-info@suse.com> or
<suse-security-faq@suse.com> respectively.
===============================================
SuSE's security contact is <security@suse.com>.
===============================================
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way.
SuSE GmbH makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
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Bye,
Thomas
--
Thomas Biege, SuSE GmbH, Schanzaeckerstr. 10, 90443 Nuernberg
E@mail: thomas@suse.de Function: Security Support & Auditing
"lynx -source http://www.suse.de/~thomas/thomas.pgp | pgp -fka"
Key fingerprint = 09 48 F2 FD 81 F7 E7 98 6D C7 36 F1 96 6A 12 47 |
