SuSE: cups Remote DoS vulnerability
Summary
______________________________________________________________________________
SuSE Security Announcement
Package: cups
Announcement-ID: SuSE-SA:2003:028
Date: Fri Jun 6 16:00:00 MEST 2003
Affected products: 7.2, 7.3, 8.0, 8.1, 8.2
SuSE Linux Desktop 1.0
SuSE Linux Enterprise Server 8
UnitedLinux 1.0
Vulnerability Type: remote Denial of Service
Severity (1-10): 3
SuSE default package: since SuSE Linux 8.1
Cross References:
CAN-2003-0195
Content of this advisory:
1) security vulnerability resolved: Remote Denial of Service attack.
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- snort
- apache-contrib/mod_gzip
- pptpd
- syslogd
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
The well known Common Unix Printing System (CUPS) was found vulnerable
to a remote Denial of Service attack. The CUPS daemon will stop serving
clients if the second carriage return in a request is not sent to
complete the header.
Since the vulnerability occurs before any authorization or address
verification there is no other workaround than shutting down the
CUPS server.
To be sure the update takes effect you have to restart the CUPS daemon
by executing the following command as root:
"rccups try-restart"
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-8.2:
91272e169e3ca412d4a8b6bc70319883
66c3ab6317ab10582f5cbebaf7dfc03a
32037ca780b2d5b1876efd6ab078a1a5
845c0babac174ac14e51e5088072bbec
patch rpm(s):
878294aa45e44adb73f15084ca390ef9
6c5952625f96fcbe2a03f98e6f4c7766
afd322019297223f07e4fedb8601e86c
3ee0fa97825c9914bdf932ff7e7255aa
source rpm(s):
da3e37ee137195f7d3490480d42f9fe6
SuSE-8.1:
a68dc792bff611653b3c0fdca02b9cb3
e70fad2398efff35f35f3bbc81de7863
ffeb2200a9113f9d32a3491d185b2be3
cc2e85315b11ab0e782ccdabdfbc1bd4
patch rpm(s):
3d9dab433ab15cdf555c69752cd50c68
330b981605a188d43dcb2384b7af0471
7fd0c91aa419489d90a0d72dc31afdd9
843d9eb7a88928b3bc6a086895166dc1
source rpm(s):
1d391aa7fe9c673b10cdc433a31d16a8
SuSE-8.0:
8db608fcc61ad30d0797e62f70c0fc34
4a4d31fbc7eb40e2af7ccfe21d3aa476
9712c749f41d22a52198cd3ff383201b
57921489e2ec29b9b0827c2a9027159f
patch rpm(s):
464024e46e3d5379a73daf56432b65ba
68be34579e0c23d08307867c6f38b50a
1ba26cbfa3d72ccdf2a96af6b85fbbff
f250bea48040e7e1efbc6cecb830d33d
source rpm(s):
414e3c386b5c735d0b592da60fa71861
SuSE-7.3:
dba10a28d785f5c4f6e4ace95bf2045b
4a4660f14d16d269ca4496c683a652d1
f4c054ae1c1816d11e54e61718df0d64
10be0d75d4e8b153a87192576b2a95a9
source rpm(s):
773c467254391265e47e05896b33d679
SuSE-7.2:
1b822c12662899b7b59b1a16bffef5ff
de90820996dfef9ea6f0682056703800
source rpm(s):
ecd550a43e25a52a2d15936cc9f8faf1
Sparc Platform:
SuSE-7.3:
df93926e3e58ab78aa679adc111d67c2
9522a331ce50310684b574fa87caed3e
7de88ba0d3eedee6eec1df815106ed3a
4e265eb21c4d49c7255582f2e0298d7a
source rpm(s):
46f2d6fa8636771f77dfbdb7f044cdfe
PPC Power PC Platform:
SuSE-7.3:
a1fced68fc86bfcab100154028b7063e
41e166ca73091950d509d588615475d9
983134d1ebd968aa13867ed19542230c
source rpm(s):
28f27c10495bc7f73bd8a8f7ecfed378
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
- snort
A overflow in the stream4 preprocessor has been fixed in the new snort
packages which will be available soon on our ftp servers.
- apache-contrib/mod_gzip
If the mod_gzip module for apache is compiled with enabled debug mode
three security vulnerabilities can be exploited remotely and localy.
SuSE Linux does not ship mod_gzip with this option enabled. The three
bugs will be fixed in future versions of SuSE Linux.
- pptpd
A buffer overflow was found in the PPTP daemon. New packages will soon
be available on our ftp servers. We will inform you in a separate advisory
when the pptpd packages are available.
- syslogd
Dirk Mueller reported a problem to SuSE Security that syslogd fails to
write to a logfile if file size (u)limits set by the administrator are
being exceeded. We recommend that administrators carefully choose which
services might fail if ulimits are set for processes that run as root. If
an administrator decides to use an additional logfile, then she should
make sure that this logfile is stated in a configuration file in
/etc/logrotate.d (or /etc/logfiles in older SuSE Linux releases).
______________________________________________________________________________
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
