SuSE Security Announcement: sudo (SuSE-SA:2002:014)
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______________________________________________________________________________
SuSE Security Announcement
Package: sudo
Announcement-ID: SuSE-SA:2002:014
Date: Tue Apr 30 16:00:00 MEST 2002
Affected products: 6.4, 7.0, 7.1, 7.2, 7.3, 8.0,
SuSE Firewall Adminhost VPN,
SuSE Linux Admin-CD for Firewall,
SuSE Linux Enterprise Server,
SuSE Linux Connectivity Server
Vulnerability Type: local privilege escalation
Severity (1-10): 6
SuSE default package: yes
Other affected systems: All systems with sudo installed.
Content of this advisory:
1) security vulnerability resolved: Heap overflow in sudo.
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
The sudo program allows local users to execute certain configured
commands with root priviledges. Sudo contains a heap overflow in its
prompt assembling function. The input used to create the password prompt
is user controlled and not properly length-checked before copied to certain
heap locations. This allows local attackers to overflow the heap of sudo,
thus executing arbitrary commands as root.
We would like to thank GlobalInterSec for finding and researching
this vulnerability.
As a temporary workaround you may remove the setuid bit from sudo by
issuing the following command as root: "chmod -s /usr/bin/sudo".
Please download the update package for your distribution and verify its
integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command "rpm -Fhv file.rpm" to apply
the update.
Our maintenance customers are being notified individually. The packages
are being offered to install from the maintenance web.
i386 Intel Platform:
SuSE-8.0
ftp://ftp.suse.com/pub/suse/i386/update/8.0/ap1/sudo-1.6.5p2-79.i386.rpm
b54f68ff4b32f9d920f2f1ff887d1ddc
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/sudo-1.6.5p2-79.src.rpm
fd1ccf6fe52c6b999c5ed24a2f3a4e65
SuSE-7.3
ftp://ftp.suse.com/pub/suse/i386/update/7.3/ap1/sudo-1.6.3p7-83.i386.rpm
80edbf5caf02c519cf2c01d6ba76d22f
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/sudo-1.6.3p7-83.src.rpm
77962932840740ce5e3dfe57a887592d
SuSE-7.2
ftp://ftp.suse.com/pub/suse/i386/update/7.2/ap1/sudo-1.6.3p6-92.i386.rpm
669aa8db134e39f462cb9f2648f6735f
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/sudo-1.6.3p6-92.src.rpm
249b1ef0135dcfede3648982900e277c
SuSE-7.1
ftp://ftp.suse.com/pub/suse/i386/update/7.1/ap1/sudo-1.6.3p6-91.i386.rpm
6b3b84f0a4c687e91da179937b87048a
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/sudo-1.6.3p6-91.src.rpm
bf59a6b200a0fb130f3528ce23698be0
SuSE-7.0
ftp://ftp.suse.com/pub/suse/i386/update/7.0/ap1/sudo-1.6.3p6-90.i386.rpm
5b67ef9fed383242111953d942c62174
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.0/zq1/sudo-1.6.3p6-90.src.rpm
c35f6390b360500b7b649e4590a748cc
SuSE-6.4
ftp://ftp.suse.com/pub/suse/i386/update/6.4/ap1/sudo-1.5.9p1-87.i386.rpm
82d98116eccc73c7a0ce03a51e9b5378
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/sudo-1.5.9p1-87.src.rpm
e75e2608036a963a7339fe4632a2550b
Sparc Platform:
SuSE-7.3
ftp://ftp.suse.com/pub/suse/sparc/update/7.3/ap1/sudo-1.6.3p7-33.sparc.rpm
bd492b6d601ceb30486e3e970a2211a3
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/sudo-1.6.3p7-33.src.rpm
d2435d180cdd76647e1f1416e93c2420
SuSE-7.1
ftp://ftp.suse.com/pub/suse/sparc/update/7.1/ap1/sudo-1.6.3p6-37.sparc.rpm
bbad36265f93fac25d59f8c26b1ccd52
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.1/zq1/sudo-1.6.3p6-37.src.rpm
a328d2eb0fdc816341a68febfeb5a33a
SuSE-7.0
ftp://ftp.suse.com/pub/suse/sparc/update/7.0/ap1/sudo-1.6.3p6-36.sparc.rpm
48e7b360b45bae0b3e9e90b3bf945f75
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/sudo-1.6.3p6-36.src.rpm
bd8f11a8916340e0d243ae1cc647df26
AXP Alpha Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/axp/update/7.1/ap1/sudo-1.6.3p6-40.alpha.rpm
4505dd58fe309ef0a4515db6a6980ec4
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/sudo-1.6.3p6-40.src.rpm
85dfbe40da4d93d54d3c16f6489a7f32
SuSE-7.0
ftp://ftp.suse.com/pub/suse/axp/update/7.0/ap1/sudo-1.6.3p6-40.alpha.rpm
b67858459774e5e04c9c22e84d5899ff
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/7.0/zq1/sudo-1.6.3p6-40.src.rpm
6d0537068d16785bfdbca936c6395abb
PPC Power PC Platform:
SuSE-7.3
ftp://ftp.suse.com/pub/suse/ppc/update/7.3/ap1/sudo-1.6.3p7-65.ppc.rpm
1734f578b1fa87c26e51a11e3dc90d18
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/sudo-1.6.3p7-65.src.rpm
ebff8b3e7b86ef9bb69fb13da37903ce
SuSE-7.1
ftp://ftp.suse.com/pub/suse/ppc/update/7.1/ap1/sudo-1.6.3p6-45.ppc.rpm
4318adbde184c1c8fff6eb581f02c11e
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/sudo-1.6.3p6-45.src.rpm
771f9e7f6d1fc1ba4df119147e48ddcd
SuSE-7.0
ftp://ftp.suse.com/pub/suse/ppc/update/7.0/ap1/sudo-1.6.3p6-45.ppc.rpm
6ae150cfa793f20e49ed751aa686fdea
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.0/zq1/sudo-1.6.3p6-45.src.rpm
ede5fedf45ffe6b59c43e082fcef50f4
SuSE-6.4
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/ap1/sudo-1.5.9p1-85.ppc.rpm
0677a205615f631a41ca308be03db7bd
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/sudo-1.5.9p1-85.src.rpm
71da4a7d43043b20eefd5e05048616d8
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
- ifup-dhcp could be tricked into executing arbitrary
commands as root by DHCP servers handing out illegal values (e.g.
containing spaces), because it sourced dhcpcd's info file, where
not all variable values are quoted. This problem has been fixed.
______________________________________________________________________________
3) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SuSE update packages are available on many mirror ftp servers all over
the world. While this service is being considered valuable and important
to the free and open source software community, many users wish to be
sure about the origin of the package and its content before installing
the package. There are two verification methods that can be used
independently from each other to prove the authenticity of a downloaded
file or rpm package:
1) md5sums as provided in the (cryptographically signed) announcement.
2) using the internal gpg signatures of the rpm package.
1) execute the command
md5sum
participants (1)
-
Sebastian Krahmer