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The syslogd package consists of two daemons that are being launched upon system startup: klogd and syslogd. The former collects kernel messages and passes them on to the syslog(3) facility. syslogd will pick up the logging messages and write them to the logfiles as specified by the syslogd configuration file /etc/syslog.conf. Errors in both the klogd and the syslogd can cause both daemons do die when specially designed strings get passed to the kernel by the user, eg. with a malformed structure in a system call. These errors have been discovered by Jouko Pynnönen, Solar Designer, a fix for one of the bugs has been provided by Daniel Jacobowitz.
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-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SuSE Security Announcement
Package: syslogd/klogd
Date: Wednesday, September 20th, 2000 03:00 MEST
Affected SuSE versions: 6.1 6.2, 6.3, 6.4, 7.0
Vulnerability Type: local DoS, possible root compromise
Severity (1-10): 5
SuSE default package: yes
Other affected systems: Linux systems, possibly unix systems
Content of this advisory:
1) security vulnerability resolved: syslogd/klogd
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 syslogd package consists of two daemons that are being launched upon
system startup: klogd and syslogd. The former collects kernel messages
and passes them on to the syslog(3) facility. syslogd will pick up the
logging messages and write them to the logfiles as specified by the
syslogd configuration file /etc/syslog.conf. Errors in both the klogd
and the syslogd can cause both daemons do die when specially designed
strings get passed to the kernel by the user, eg. with a malformed
structure in a system call. These errors have been discovered by Jouko
Pynnönen, Solar Designer, a fix for one of the bugs has been provided
by Daniel Jacobowitz.
There is currently no known way to exploit these bugs with an
effect other than a DoS (Denial of Service) of the syslog/klog service.
Since it may be possible to execute arbitrary code as a result of a
buffer overflow, administrators should consider applying the patches
as soon as possible. Also, logging messages resulting from firewall
rules in the kernel can get lost if the daemon does not pick them up.
Efficient temporary countermeasures against these attacks other than
package upgrade do not exist.
Download the update package from locations desribed below and install
the package with the command `rpm -Fhv 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-7.0
ftp://ftp.suse.com/pub/suse/i386/update/7.0/a1/syslogd-1.3.33-161.i386.rpm
284b1975cda65cd6ed5ce65672706e19
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.0/zq1/syslogd-1.3.33-161.src.rpm
49c7a171753171f4e6fd772453d46a93
SuSE-6.4
ftp://ftp.suse.com/pub/suse/i386/update/6.4/a1/syslogd-1.3.33-161.i386.rpm
cb89ed419b0c9dbf7c66191a58606920
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/syslogd-1.3.33-161.src.rpm
33686198aa6412401b0056241829aae0
SuSE-6.3
ftp://ftp.suse.com/pub/suse/i386/update/6.3/a1/syslogd-1.3.33-161.i386.rpm
af5e43976fb9814e1f5d626e16c2d176
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.3/zq1/syslogd-1.3.33-161.src.rpm
1e821f6fda1f471d36e9b4990aa496b4
SuSE-6.2
ftp://ftp.suse.com/pub/suse/i386/update/6.2/a1/syslogd-1.3.33-9.i386.rpm
fc29df9455288f40eb1e8dbd0f47d5b3
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.2/zq1/syslogd-1.3.33-9.src.rpm
ae980989a754e6bf85de9dd60676b321
SuSE-6.1
ftp://ftp.suse.com/pub/suse/i386/update/6.1/a1/syslogd-1.3.33-161.i386.rpm
c8d23ec6c3a9f944c15d6e12ffebc66f
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.1/zq1/syslogd-1.3.33-161.src.rpm
b0329c20caf1d1d427da9961240732f5
SuSE-5.3
ftp://ftp.suse.com/pub/suse/i386/update/5.3/a1/syslogd-1.3.33-9.i386.rpm
3104e26a8b474e215ed703b7c4d48888
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/5.3/zq1/syslogd-1.3.33-9.src.rpm
09c9539df1c4225d2366a2a860b01dbb
Sparc Platform:
SuSE-7.0
ftp://ftp.suse.com/pub/suse/sparc/update/7.0/a1/syslogd-1.3.33-161.sparc.rpm
38bb40e8bdfd55387f0e25407d4e5cbd
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/syslogd-1.3.33-161.src.rpm
2017cbca57305092c0a912b77c2411dd
AXP Alpha Platform:
SuSE-6.4
ftp://ftp.suse.com/pub/suse/axp/update/6.4/a1/syslogd-1.3.33-162.alpha.rpm
419ea3172f4532f77c4fc5907de345f2
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.4/zq1/syslogd-1.3.33-162.src.rpm
44cb992c94dffff0d31b65a0938fc1cc
SuSE-6.3
ftp://ftp.suse.com/pub/suse/axp/update/6.3/a1/syslogd-1.3.33-161.alpha.rpm
84cfb8fa2e471baadf96eae1d3be1d0a
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.3/zq1/syslogd-1.3.33-161.src.rpm
23ee4562c993de6943cead4878e73259
SuSE-6.1
ftp://ftp.suse.com/pub/suse/axp/update/6.1/a1/syslogd-1.3.33-161.alpha.rpm
3b04489436b536d3d2e4b4bec6bc5ced
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.1/zq1/syslogd-1.3.33-161.src.rpm
ab7edad2685d8d820b0f72b470048e81
PPC Power PC Platform:
SuSE-6.4
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/a1/syslogd-1.3.33-161.ppc.rpm
9d588d1d4614d173b60746ae74fc6046
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/syslogd-1.3.33-161.src.rpm
eae3b0cd9b7de4ded453e9151b722b0e
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
This is the updated list of currently known security problems. Other
problems such as the one from the subject of this advisory have passed
these vulnerabilities due to greater severity.
- esound, xchat, gnorpm, xpdf
These packages are known to exhibit file race conditions. We will
provide update packages soon.
- pine
The pine Mail User Agent may crash when it encounters a specially
crafted header line in an email. Again, we're working on a patch.
______________________________________________________________________________
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>.
===============================================
Regards,
Roman Drahtmüller.
- - --
- -
| Roman Drahtmüller <draht@suse.de> // "Caution: Cape does |
SuSE GmbH - Security Phone: // not enable user to fly."
| Nürnberg, Germany +49-911-740530 // (Batman Costume warning label) |
- -
______________________________________________________________________________
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.
Type Bits/KeyID Date User ID
pub 2048/3D25D3D9 1999/03/06 SuSE Security Team <security@suse.de>
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This archive was generated by hypermail 2.1.0
: Mon Jun 04 2001 - 18:25:15 PDT
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