SuSE: 'htdig' local privilege escalation vulnerability
Summary
______________________________________________________________________________
SuSE Security Announcement
Package: htdig
Announcement-ID: SuSE-SA:2001:035
Date: Wednesday, October 24th 2001 09:30 MEST
Affected SuSE versions: 6.3, 6.4, 7.0, 7.1, 7.2, 7.3
Vulnerability Type: local privilege escalation, remote DoS
Severity (1-10): 3
SuSE default package: no
Other affected systems: all linux-like operating-systems running
htdig's htsearch via CGI
Content of this advisory:
1) security vulnerability resolved: htsearch
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
ht://Dig is a powerfull indexing and information gathering tool for the
web. ht://Dig's search engine htsearch could be run by a http server
as CGI program or standalone as commandline tool.
Due to insufficient checking of the running environment it is possible
to use commandline options via CGI. An remote attacker could use the -c
option to specify /dev/zero as an alternate config file to causes a
denial of service for some minutes.
To read files with the privilege of the http server by abusing the -c
option an attacker needs write access to the server running htsearch.
A temporary fix or workaround does not exist; we recommend to update
your system with the new RPM from our FTP server.
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 -Uhv file.rpm" to apply
the update.
i386 Intel Platform:
SuSE-7.3
543b0668bbbe3c35a7b7f4aab523a497
source rpm:
553ca93fb20eaa4a0d9dcf140d2a1cc3
SuSE-7.2
70f7263f6b03d67858e14b6caf7716a3
source rpm:
8853a7c1094450642d0c8eafcd7db612
SuSE-7.1
934907ab6b8c1394446d3272122b6ba4
source rpm:
04b7f1552aa7c2c31dd796e5db5db610
SuSE-7.0
5eb6e0f2cd8c92f9d27c983cfa61c0cd
source rpm:
33b6e71c0cba4b2e9faa0426f1a9c27c
SuSE-6.4
e65d6a8f096762617ea1b271b1ec1582
source rpm:
ced955e563db7c4e422659228adbef58
SuSE-6.3
b2cd121f8f71064f79fb9d5d969b3d21
source rpm:
3910e17d54392f755325960d1c2a9a13
Sparc Platform:
SuSE-7.1
1a4e2643d776360178eea8d1d23f4fab
source rpm:
66535cba934ecfce550ad60cadccad4d
SuSE-7.0
72ea40099742b87151146d3159b46d9f
source rpm:
3de8701655664c84fb3a2c98ec857fca
AXP Alpha Platform:
SuSE-7.1
23233fc040bbb7b7b8e9386e974257e9
source rpm:
d7362ba99853fe56eb57b5ab71c1b11e
SuSE-7.0
5549cf04c28bd2436f259c22fabd23f3
source rpm:
ef269335b80344c7e4c9167865c432e4
SuSE-6.4
5ff4ae9cb1845b0d416fe4fee2caf26a
source rpm:
ec966adf8722dcf0eefe94356a1b4d9e
SuSE-6.3
ec84394421f9480d13746f8c5ba7416c
source rpm:
1f11551d794bcc08f3574af57c6fc2e3
PPC PowerPC Platform:
SuSE-7.1
bb84003b547a0e80133da198de07c1cf
source rpm:
93ad965154d8fe1b24ae15d0881966c8
SuSE-7.0
dbf2f686bc1bfaf4a59721157afdafb1
source rpm:
70d360499c0bc89e2d90bcf2454e0867
SuSE-6.4
e9613bc7f5b28240f0aeece14059d976
source rpm:
d4fb3b096ceb3b5cc7d42924a0952863
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
- Linux kernel
Security bugs have been found in both the 2.2 and 2.4 kernel series
of all currently supported SuSE Linux distributions (6.3-7.3), including
the freshly appeared SuSE-7.3. These bugs allow a local attacker to gain
root privileges, but there is no remote attack as of now.
As a temporary workaround, it is possible for experienced users of
linux-like systems to disable all setuid bits from all files in the
installed system using a find command with a -exec option.
We are currently in the process of testing the update kernels of both
2.2 (2.2.19) and 2.4 (2.4.13) series to make sure that these update
kernels will have the same level of stability and robustness as expected
from SuSE linux systems. The official kernel rpm packages will be
announced in a SuSE Security announcement during the second half of
this week. In the meanwhile, the directory
contains the preliminary
update packages for testing (2.2.19 packages will be available shortly).
Please proceed with the update as described in
SUSE – Open-Source-Lösungen für Enterprise Server und Cloud | SUSE
and report any problems that you may find to feedback@suse.de.
- openssh
After stabilizing the openssh package, updates for the distributions
6.4-7.2 are currently being prepared. The update packages fix a security
problem related to the recently discovered problems with source ip
based access restrictions in a user's ~/.ssh/authorized_keys2 file.
The packages will appear shortly on our ftp servers. Please note that
packages for the distributions 6.3 and up including 7.0 containing
cryptographic software are located on the German ftp server ftp.suse.de,
all other packages can be found on ftp.suse.com at the usual location.
Please continue to watch the suse-security-announce mailing list for
new security announcements.
______________________________________________________________________________
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
References
