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05-Jan-2003, 03:26 PM
#1 |
| Hiya CUPS is a well known and widely used printing system for unix-like systems. iDFENSE reported several security issues with CUPS that can lead to local and remote root compromise. The following list includes all vulnerabilities: - integer overflow in HTTP interface to gain remote access with CUPS privileges - local file race condition to gain root (bug mentioned above has to be exploited first) - remotely add printers - remote denial-of-service attack due to negative length in memcpy() call - integer overflow in image handling code to gain higher privileges - gain local root due to buffer overflow of 'options' buffer - design problem to gain local root (needs added printer, see above) - wrong handling of zero width images can be abused to gain higher privileges - file descriptor leak and denial-of-service due to missing checks of return values of file/socket operations Since SuSE 8.1 CUPS is the default printing system. As a temporary workaround CUPS can be disabled and an alternative printing system like LPRng can be installed instead. New CUPS packages are available on our FTP servers. Please, install them to fix your system. http://www.linuxsecurity.com/advisor...sory-2709.html "The pdftops filter in the Xpdf and CUPS packages contains an integer overflow that can be exploited to gain the privileges of the target user or in some cases the increased privileges of the 'lp' user if installed setuid. There are multiple ways of exploiting this vulnerability." http://www.linuxsecurity.com/advisor...sory-2710.html "This vulnerability can make leafnode's nntpd server, named leafnode, go into an unterminated loop when a particular article is requested. The connection becomes irresponsive, and the server hogs the CPU. The client will have to terminate the connection and connect again, and may fall prey to the same problem; ultimately, there may be so many leafnode processes hogging the CPU that no serious work is possible any more and the super user has to kill all running leafnode processes." http://www.linuxsecurity.com/advisor...sory-2711.html A cross site scripting vulnerability has been discovered in squirrelmail, a feature-rich webmail package written in PHP4. Squirrelmail doesn't sanitize user provided variables in all places, leaving it vulnerable to a cross site scripting attack. For the current stable distribution (woody) this problem has been fixed in version 1.2.6-1.3. The old stable distribution (potato) is not affected since it doesn't contain a squirrelmail package. An updated package for the current unstable distribution (sid) is expected soon. We recommend that you upgrade your squirrelmail package. http://www.linuxsecurity.com/advisor...sory-2712.html Stefan Esser from e-matters reported various bugs in MySQL. Within the MySQL server the password checking and a signedness issue has been fixed. These could lead to a remote compromise of the system running an unpatched MySQL server. In order to exploit this bug, the remote attacker needs a valid MySQL account. Further, a buffer overflow in the mysqlclient library has been reported and fixed. Applications using this library (as commonly used from within PHP scripts) are vulnerable to this attack and could also be compromised by remote attackers. Since there is no workaround possible except shutting down the MySQL server, we strongly recommend an update. 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. To be sure the update takes effect you have to restart the MySQL server by executing the following command as root: /etc/rc.d/mysql restart If you run applications which utilize the mysqlclient library (i.e. software that accesses a MySQL database server) make sure you restart them again to force the use of the patched libraries. We thank MySQL Product and Release Engineer Lenz Grimmer as well as e-matters Stefan Esser who discovered the bugs for their committment to security matters and the communication of them. http://www.linuxsecurity.com/advisor...sory-2713.html Earl Hood, author of mhonarc, a mail to HTML converter, discovered a cross site scripting vulnerability in this package. A specially crafted HTML mail message can introduce foreign scripting content in archives, by-passing MHonArc's HTML script filtering. For the current stable distribution (woody) this problem has been fixed in version 2.5.2-1.3. For the old stable distribution (potato) this problem has been fixed in version 2.4.4-1.3. For the unstable distribution (sid) this problem has been fixed in version 2.5.14-1. We recommend that you upgrade your mhonarc package. http://www.linuxsecurity.com/advisor...sory-2714.html A vulnerability in Pine version 4.44 and earlier releases can cause Pine to crash when sent a carefully crafted email. 2. Relevant releases/architectures: Red Hat Linux 6.2 - i386 Red Hat Linux 7.0 - i386 Red Hat Linux 7.1 - i386 Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.3 - i386 Red Hat Linux 8.0 - i386 3. Problem description: Pine, developed at the University of Washington, is a tool for reading, sending, and managing electronic messages (including mail and news). A security problem was found in versions of Pine 4.44 and earlier. In these versions, Pine does not allocate enough memory for the parsing and escaping of the "From" header, allowing a carefully crafted email to cause a buffer overflow on the heap. This will result in Pine crashing. All users of Pine on Red Hat Linux are advised to update to these errata packages containing a patch to version 4.44 of Pine that fixes this vulnerability. http://www.linuxsecurity.com/advisor...sory-2715.html Regards eddie
__________________ Just go with the flow, like a twig on the shoulders of a mighty stream Weekends I may be busy, so there may be a delay in replies. |
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11-Jan-2003, 04:59 PM
#2 |
| A security vulnerability has been confirmed to exist in Apache Tomcat 4.0.x releases, which allows to use a specially crafted URL to return the unprocessed source of a JSP page, or, under special circumstances, a static resource which would otherwise have been protected by a security constraint, without the need for being properly authenticated. This is based on a variant of the exploit that was identified as CAN-2002-1148. For the current stable distribution (woody) this problem has been fixed in version 4.0.3-3woody2. The old stable distribution (potato) does not contain tomcat packages. For the unstable distribution (sid) this problem does not exist in the current version 4.1.16-1. We recommend that you upgrade your tomcat packages. http://www.linuxsecurity.com/advisor...sory-2740.html Ethereal is a package designed for monitoring network traffic on your system. Several security issues have been found in the Ethereal packages distributed with Red Hat Linux versions 7.2, 7.3, and 8.0 Multiple integer signedness errors in the BGP dissector in Ethereal 0.9.7 and earlier allow remote attackers to cause a denial of service (infinite loop) via malformed messages. This problem was discovered by Silvio Cesare. CAN-2002-1355 Ethereal 0.9.7 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via malformed packets to the LMP, PPP, or TDS dissectors. CAN-2002-1356 Users of Ethereal should update to the erratum packages containing Ethereal version 0.9.8 which is not vulnerable to these issues http://www.linuxsecurity.com/advisor...sory-2741.html Heap-based buffer overflow in fetchmail does not account for the "@" character when determining buffer lengths for local addresses, which allows remote attackers to execute arbitrary code via a header with a large number of local addresses. http://www.linuxsecurity.com/advisor...sory-2742.html The pdftops filter found in both the xpdf and CUPS packages suffers from an integer overflow that can be exploited to gain the privilege of the victim user. http://www.linuxsecurity.com/advisor...sory-2743.html iDefense reported several security problems in CUPS that can lead to local and remote root compromise. An integer overflow in the HTTP interface can be used to gain remote access with CUPS privilege. A local file race condition can be used to gain root privilege, although the previous bug must be exploited first. An attacker can remotely add printers to the vulnerable system. A remote DoS can be accomplished due to negative length in the memcpy() call. An integer overflow in image handling code can be used to gain higher privilege. An attacker can gain local root privilege due to a buffer overflow of the 'options' buffer. A design problem can be exploited to gain local root access, however this needs an added printer (which can also be done, as per a previously noted bug). Wrong handling of zero-width images can be abused to gain higher privilege. Finally, a file descriptor leak and DoS due to missing checks of return values of file/socket operations. MandrakeSoft recommends all users upgrade these CUPS packages immediately. http://www.linuxsecurity.com/advisor...sory-2744.html A vulnerability was discovered by Simon Kelley in the dhcpcd DHCP client daemon. dhcpcd has the ability to execute an external script named dhcpcd-.exe when an IP address is assigned to that network interface. The script sources the file /var/lib/dhcpcd/dhcpcd-.info which contains shell variables and DHCP assignment information. The way quotes are handled inside these assignments is flawed, and a malicious DHCP server can execute arbitrary shell commands on the vulnerable DHCP client system. This can also be exploited by an attacker able to spoof DHCP responses. Mandrake Linux packages contain a sample /etc/dhcpc/dhcpcd.exe file and encourages all users to upgrade immediately. Please note that when you do upgrade, you will have to restart the network for the changes to take proper effect by issuing "service network restart" as root. http://www.linuxsecurity.com/advisor...sory-2745.html iDEFENSE discovered an integer overflow in the pdftops filter from the xpdf and xpdf-i packages that can be exploited to gain the privileges of the target user. This can lead to gaining privileged access to the 'lp' user if thee pdftops program is part of the print filter. For the current stable distribution (woody) xpdf-i is only a dummy package and the problem was fixed in xpdf already. For the old stable distribution (potato) this problem has been fixed in version 0.90-8.1. For the unstable distribution (sid) this problem has been fixed in version 2.01-2. We recommend that you upgrade your xpdf-i package. http://www.linuxsecurity.com/advisor...sory-2746.html Regards eddie
__________________ Just go with the flow, like a twig on the shoulders of a mighty stream Weekends I may be busy, so there may be a delay in replies. |
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18-Jan-2003, 02:27 PM
#3 |
| VIM (Vi IMproved) is a version of the vi editor. VIM allows a user to set the modeline differently for each edited text file by placing special comments in the files. Georgi Guninski found that these comments can be carefully crafted in order to call external programs. This could allow an attacker to create a text file such that when it is opened arbitrary commands are executed. Users of VIM are advised to upgrade to these errata packages which have been patched to disable the usage of dangerous functions in modelines. http://www.linuxsecurity.com/advisor...sory-2767.html A review was completed by the SuSE Security Team on the OpenLDAP server software, and this audit revealed several buffer overflows and other bugs that remote attackers could exploit to gain unauthorized access to the system running the vulnerable OpenLDAP servers. Additionally, various locally exploitable bugs in the OpenLDAP v2 libraries have been fixed as well. http://www.linuxsecurity.com/advisor...sory-2768.html Two vulnerabilities have been discovered in Bugzilla, a web-based bug tracking system, by its authors. The Common Vulnerabilities and Exposures Project identifies the following vulnerabilities: * CAN-2003-0012 (BugTraq ID 6502): The provided data collection script intended to be run as a nightly cron job changes the permissions of the data/mining directory to be world-writable every time it runs. This would enable local users to alter or delete the collected data. * CAN-2003-0013 (BugTraq ID 6501): The default .htaccess scripts provided by checksetup.pl do not block access to backups of the localconfig file that might be created by editors such as vi or emacs (typically these will have a .swp or ~ suffix). This allows an end user to download one of the backup copies and potentially obtain your database password. This does not affect the Debian installation because there is no .htaccess as all data file aren't under the CGI path as they are on the standard Bugzilla package. Additionally, the configuration is in /etc/bugzilla/localconfig and hence outside of the web directory. http://www.linuxsecurity.com/advisor...sory-2769.html Stefano Zacchiroli found a buffer overrun in the url_filename function, which would make wget segfault on very long urls. Steven M. Christey discovered that wget did not verify the FTP server response to a NLST command: it must not contain any directory information, since that can be used to make a FTP client overwrite arbitrary files. http://www.linuxsecurity.com/advisor...sory-2770.html "fnord 1.6 contained a buffer overrun in the CGI code. However, since the function does not return, this does not appear to be exploitable." http://www.linuxsecurity.com/advisor...sory-2771.html "The Internet Software Consortium (ISC) has discovered several buffer overflow vulnerabilities in their implementation of DHCP (ISC DHCPD). These vulnerabilities may allow remote attackers to execute arbitrary code on affected systems. At this time, we are not aware of any exploits." http://www.linuxsecurity.com/advisor...sory-2772.html The Internet Software Consortium discoverd several vulnerabilities during an audit of the ISC DHCP Daemon. The vulnerabilities exist in error handling routines within the minires library and may be exploitable as stack overflows. This could allow a remote attacker to execute arbitrary code under the user id the dhcpd runs under, usually root. Other DHCP servers than dhcp3 doesn't seem to be affected. For the stable distribution (woody) this problem has been fixed in version 3.0+3.0.1rc9-2.1. The old stable distribution (potato) does not contain dhcp3 packages. For the unstable distribution (sid) this problem has been fixed in version 3.0+3.0.1rc11-1. We recommend that you upgrade your dhcp3-server package. http://www.linuxsecurity.com/advisor...sory-2773.html Regards eddie
__________________ Just go with the flow, like a twig on the shoulders of a mighty stream Weekends I may be busy, so there may be a delay in replies. |
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26-Jan-2003, 10:57 AM
#4 |
| The package "dhcp" provides a Dynamic Host Configuration Protocol[1] server developed by ISC (ISC DHCPD). During an internal source code audit, the ISC developers found several stack-based buffer overflow vulnerabilities[2,3] in the error handling routines of the minires library. This library is used by the NSUPDATE feature, which is present in dhcp versions newer than 3.0 and allows the DHCP server to dynamically update DNS server records. A remote attacker which can send messages directly to the DHCP server can exploit these vulnerabilities to execute arbitrary code in the server context with the privileges of the root user. The packages provided with this announcement fix these vulnerabilities with a patch from ISC. Please note that Conectiva Linux versions prior to 8 do not ship dhcp 3.0 and therefore are not vulnerable to this problem. http://www.linuxsecurity.com/advisor...sory-2805.html libpng is a library used to create and manipulate PNG (Portable Network Graphics) image files. Glenn Randers-Pehrson discovered a buffer overflow vulnerability in unpatched libpng versions prior to 1.0.15 and 1.2.5(*) (inclusive). Programs such as web browsers and various others common applications make use of libpng. An attacker could exploit this vulnerability to remotely run arbitrary code or crash such applications by using a specially crafted png image. This update provides patched versions of libpng with fixes for this vulnerability. * The libpng-1.2.X series is available only in Conectiva Linux 8 in the libpng3 package. http://www.linuxsecurity.com/advisor...sory-2806.html The KDE team discovered several vulnerabilities in the K Desktop Environment. In some instances KDE fails to properly quote parameters of instructions passed to a command shell for execution. These parameters may incorporate data such as URLs, filenames and e-mail addresses, and this data may be provided remotely to a victim in an e-mail, a webpage or files on a network filesystem or other untrusted source. By carefully crafting such data an attacker might be able to execute arbitary commands on a vulnerable sytem using the victim's account and privileges. The KDE Project is not aware of any existing exploits of these vulnerabilities. The patches also provide better safe guards and check data from untrusted sources more strictly in multiple places. For the current stable distribution (woody), these problems have been fixed in version 2.2.2-2.2. The old stable distribution (potato) does not contain KDE packages. For the unstable distribution (sid), these problems will most probably not be fixed but new packages for KDE 3.1 for sid are expected for this year. We recommend that you upgrade your KDE packages. http://www.linuxsecurity.com/advisor...sory-2807.html According to research done by Steve Christey [0], directory traversal vulnerabilities exist in many FTP clients including wget [1]. Resolution of this issue was handled primarily through Mark Cox of Red Hat whose patches were incorporated into the wget 1.8.2 HEAD development branch of the vendor. The Common Vulnerabilities and Exposures (CVE) project assigned the id CAN-2002-1344 [2] to the problem. Please check whether you are affected by running "/bin/rpm -q wget". If you have the "wget" package installed and its version is affected (see above), we recommend that you immediately upgrade it http://www.linuxsecurity.com/advisor...sory-2808.html The KDE team discovered several vulnerabilities in the K Desktop Environment. In some instances KDE fails to properly quote parameters of instructions passed to a command shell for execution. These parameters may incorporate data such as URLs, filenames and e-mail addresses, and this data may be provided remotely to a victim in an e-mail, a webpage or files on a network filesystem or other untrusted source. By carefully crafting such data an attacker might be able to execute arbitary commands on a vulnerable system using the victim's account and privileges. The KDE Project is not aware of any existing exploits of these vulnerabilities. The patches also provide better safe guards and check data from untrusted sources more strictly in multiple places. For the current stable distribution (woody), these problems have been fixed in version 2.2.2-9.2. The old stable distribution (potato) does not contain KDE packages. For the unstable distribution (sid), these problems will most probably not be fixed but new packages for KDE 3.1 for sid are expected for this year. We recommend that you upgrade your KDE packages. http://www.linuxsecurity.com/advisor...sory-2809.html The KDE team discovered several vulnerabilities in the K Desktop Environment. In some instances KDE fails to properly quote parameters of instructions passed to a command shell for execution. These parameters may incorporate data such as URLs, filenames and e-mail addresses, and this data may be provided remotely to a victim in an e-mail, a webpage or files on a network filesystem or other untrusted source. By carefully crafting such data an attacker might be able to execute arbitary commands on a vulnerable system using the victim's account and privileges. The KDE Project is not aware of any existing exploits of these vulnerabilities. The patches also provide better safe guards and check data from untrusted sources more strictly in multiple places. For the current stable distribution (woody), these problems have been fixed in version 2.2.2-14.2. The old stable distribution (potato) does not contain KDE packages. For the unstable distribution (sid), these problems will most probably not be fixed but new packages for KDE 3.1 for sid are expected for this year. We recommend that you upgrade your KDE packages. http://www.linuxsecurity.com/advisor...sory-2810.html The KDE team discovered several vulnerabilities in the K Desktop Environment. In some instances KDE fails to properly quote parameters of instructions passed to a command shell for execution. These parameters may incorporate data such as URLs, filenames and e-mail addresses, and this data may be provided remotely to a victim in an e-mail, a webpage or files on a network filesystem or other untrusted source. By carefully crafting such data an attacker might be able to execute arbitary commands on a vulnerable system using the victim's account and privileges. The KDE Project is not aware of any existing exploits of these vulnerabilities. The patches also provide better safe guards and check data from untrusted sources more strictly in multiple places. For the current stable distribution (woody), these problems have been fixed in version 2.2.2-8.2. Please note that we are unable to provide updated packages for both MIPS architectures since the compilation of kdemultimedia triggers an internal compiler error on these machines. The old stable distribution (potato) does not contain KDE packages. For the unstable distribution (sid), these problems will most probably not be fixed but new packages for KDE 3.1 for sid are expected for this year. We recommend that you upgrade your KDE packages http://www.linuxsecurity.com/advisor...sory-2811.html Regards eddie
__________________ Just go with the flow, like a twig on the shoulders of a mighty stream Weekends I may be busy, so there may be a delay in replies. |
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