Re: Fwd: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse
On Mon, Nov 04, 2002 at 01:36:36PM +, David Wright wrote: Quoting Phillip Hofmeister ([EMAIL PROTECTED]): What's this about? _ 2. Remove the setuid bit from the XaoS binary by executing the following command: # chmod -s /usr/lib/games/abuse/abuse.* (noticing -rwsr-xr-x root root 37 Jul 27 17:34 /usr/bin/xaos) ^ Yikes. I recommend: dpkg-statoverride --update --add root root 755 /usr/bin/xaos This is permanent across upgrades, removals, and reinstalls of the xaos package. (--update tells statoverride to effect the change itself.) -- #define X(x,y) x##y Peter Cordes ; e-mail: X([EMAIL PROTECTED] , ns.ca) The gods confound the man who first found out how to distinguish the hours! Confound him, too, who in this place set up a sundial, to cut and hack my day so wretchedly into small pieces! -- Plautus, 200 BC
Re: Fwd: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse
Quoting Phillip Hofmeister ([EMAIL PROTECTED]): From: David Endler [EMAIL PROTECTED] [...]In a default abuse installation in Debian Linux, both abuse.console and abuse.x11R6 can be used in exploitation; both files are set group id games, and abuse.console is set user id root. What's this about? _ 2. Remove the setuid bit from the XaoS binary by executing the following command: # chmod -s /usr/lib/games/abuse/abuse.* (noticing -rwsr-xr-x root root 37 Jul 27 17:34 /usr/bin/xaos) ^ Cheers, -- Email: [EMAIL PROTECTED] Tel: +44 1908 653 739 Fax: +44 1908 655 151 Snail: David Wright, Earth Science Dept., Milton Keynes, England, MK7 6AA Disclaimer: These addresses are only for reaching me, and do not signify official stationery. Views expressed here are either my own or plagiarised. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Fwd: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse
On Mon, Nov 04, 2002 at 01:36:36PM +, David Wright wrote: Quoting Phillip Hofmeister ([EMAIL PROTECTED]): What's this about? _ 2. Remove the setuid bit from the XaoS binary by executing the following command: # chmod -s /usr/lib/games/abuse/abuse.* (noticing -rwsr-xr-x root root 37 Jul 27 17:34 /usr/bin/xaos) ^ Yikes. I recommend: dpkg-statoverride --update --add root root 755 /usr/bin/xaos This is permanent across upgrades, removals, and reinstalls of the xaos package. (--update tells statoverride to effect the change itself.) -- #define X(x,y) x##y Peter Cordes ; e-mail: X([EMAIL PROTECTED] , ns.ca) The gods confound the man who first found out how to distinguish the hours! Confound him, too, who in this place set up a sundial, to cut and hack my day so wretchedly into small pieces! -- Plautus, 200 BC -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Fwd: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse
Quoting Phillip Hofmeister ([EMAIL PROTECTED]): From: David Endler [EMAIL PROTECTED] [...]In a default abuse installation in Debian Linux, both abuse.console and abuse.x11R6 can be used in exploitation; both files are set group id games, and abuse.console is set user id root. What's this about? _ 2. Remove the setuid bit from the XaoS binary by executing the following command: # chmod -s /usr/lib/games/abuse/abuse.* (noticing -rwsr-xr-x root root 37 Jul 27 17:34 /usr/bin/xaos) ^ Cheers, -- Email: [EMAIL PROTECTED] Tel: +44 1908 653 739 Fax: +44 1908 655 151 Snail: David Wright, Earth Science Dept., Milton Keynes, England, MK7 6AA Disclaimer: These addresses are only for reaching me, and do not signify official stationery. Views expressed here are either my own or plagiarised.
Fwd: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse
I am sure you have all seen this...but just in case. Phil - Forwarded message from David Endler [EMAIL PROTECTED] - From: David Endler [EMAIL PROTECTED] Subject: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse To: [EMAIL PROTECTED] Date: Fri, 1 Nov 2002 14:36:52 -0500 X-Spam-Status: No, bogofilter Delivery-date: Fri, 01 Nov 2002 16:37:04 -0500 X-Razor-Warning: NONE. -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 iDEFENSE Security Advisory 11.01.02: http://www.idefense.com/advisory/11.01.02.txt Buffer Overflow Vulnerability in Abuse October 31, 2002 I. BACKGROUND Abuse is a popular side-scrolling video game. More information can be found at http://jonathanclark.com/ and http://www.crack.com/. II. DESCRIPTION Exploitation of a locally exploitable parsing error in Abuse's -net command line option could allow attackers to gain root privileges on a targeted system. By supplying an overly long argument, the instruction pointer is overwritten, thereby allowing an attacker to seize control of the executable. In a default abuse installation in Debian Linux, both abuse.console and abuse.x11R6 can be used in exploitation; both files are set group id games, and abuse.console is set user id root. III. ANALYSIS Exploitation allows a local attacker to gain super-user status and full control over the targeted system. Affected users should implement either of the two workarounds listed below. IV. DETECTION Abuse 2.00, which is packaged and distributed with the x86 architecture of Debian Linux 3.0r0, is vulnerable. Other platforms and architectures may be vulnerable as well. To determine if a specific Abuse implementation is vulnerable, launch it with the following command line: $ /usr/lib/games/abuse/abuse.console -net 'perl -e 'print Ax500'' If the application crashes with a Segmentation fault, it is vulnerable. V. WORKAROUND Customers should consider implementing one of the two following workarounds: 1. Remove Abuse by issuing the following command: # apt-get remove abuse 2. Remove the setuid bit from the XaoS binary by executing the following command: # chmod -s /usr/lib/games/abuse/abuse.* VI. VENDOR RESPONSE Abuse has a number of other vulnerabilities and should never be installed on a multi-user system where security is a concern, said Jonathan Clark. Abuse allows alternate Lisp script files to be executed at startup via command line parameters. Some script functions can execute abritrary commands or cause external files to modified. VII. CVE INFORMATION The Mitre Corp.'s Common Vulnerabilities and Exposures (CVE) Project assigned the identification number CAN-2002-1250 to this issue. VIII. DISCLOSURE TIMELINE 10/15/2002 Issue disclosed to iDEFENSE 10/31/2002 Author notified 10/31/2002 iDEFENSE clients notified 11/01/2002 Response received from Jonathan Clark ([EMAIL PROTECTED]) 11/01/2002 Public disclosure IX. CREDIT Texonet (http://www.texonet.com) discovered this vulnerability. Get paid for security research http://www.idefense.com/contributor.html Subscribe to iDEFENSE Advisories: send email to [EMAIL PROTECTED], subject line: subscribe About iDEFENSE: iDEFENSE is a global security intelligence company that proactively monitors sources throughout the world from technical vulnerabilities and hacker profiling to the global spread of viruses and other malicious code. Our security intelligence services provide decision-makers, frontline security professionals and network administrators with timely access to actionable intelligence and decision support on cyber-related threats. For more information, visit http://www.idefense.com. - -dave David Endler, CISSP Director, Technical Intelligence iDEFENSE, Inc. 14151 Newbrook Drive Suite 100 Chantilly, VA 20151 voice: 703-344-2632 fax: 703-961-1071 [EMAIL PROTECTED] www.idefense.com -BEGIN PGP SIGNATURE- Version: PGP 7.1.2 Comment: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x4B0ACC2A iQA/AwUBPcLJckrdNYRLCswqEQKiIwCfYNMqgc3cz0u47KI072fQTtGqTN4An064 DlkW88VtmsQ+ZCyPWhAWnRms =tjox -END PGP SIGNATURE- - End forwarded message - -- Phil PGP/GPG Key: http://www.zionlth.org/~plhofmei/ wget -O - http://www.zionlth.org/~plhofmei/key.txt | gpg --import -- Excuse #238: Routing problems on the neural net msg07608/pgp0.pgp Description: PGP signature
Fwd: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse
I am sure you have all seen this...but just in case. Phil - Forwarded message from David Endler [EMAIL PROTECTED] - From: David Endler [EMAIL PROTECTED] Subject: iDEFENSE Security Advisory 11.01.02: Buffer Overflow Vulnerability in Abuse To: bugtraq@securityfocus.com Date: Fri, 1 Nov 2002 14:36:52 -0500 X-Spam-Status: No, bogofilter Delivery-date: Fri, 01 Nov 2002 16:37:04 -0500 X-Razor-Warning: NONE. -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 iDEFENSE Security Advisory 11.01.02: http://www.idefense.com/advisory/11.01.02.txt Buffer Overflow Vulnerability in Abuse October 31, 2002 I. BACKGROUND Abuse is a popular side-scrolling video game. More information can be found at http://jonathanclark.com/ and http://www.crack.com/. II. DESCRIPTION Exploitation of a locally exploitable parsing error in Abuse's -net command line option could allow attackers to gain root privileges on a targeted system. By supplying an overly long argument, the instruction pointer is overwritten, thereby allowing an attacker to seize control of the executable. In a default abuse installation in Debian Linux, both abuse.console and abuse.x11R6 can be used in exploitation; both files are set group id games, and abuse.console is set user id root. III. ANALYSIS Exploitation allows a local attacker to gain super-user status and full control over the targeted system. Affected users should implement either of the two workarounds listed below. IV. DETECTION Abuse 2.00, which is packaged and distributed with the x86 architecture of Debian Linux 3.0r0, is vulnerable. Other platforms and architectures may be vulnerable as well. To determine if a specific Abuse implementation is vulnerable, launch it with the following command line: $ /usr/lib/games/abuse/abuse.console -net 'perl -e 'print Ax500'' If the application crashes with a Segmentation fault, it is vulnerable. V. WORKAROUND Customers should consider implementing one of the two following workarounds: 1. Remove Abuse by issuing the following command: # apt-get remove abuse 2. Remove the setuid bit from the XaoS binary by executing the following command: # chmod -s /usr/lib/games/abuse/abuse.* VI. VENDOR RESPONSE Abuse has a number of other vulnerabilities and should never be installed on a multi-user system where security is a concern, said Jonathan Clark. Abuse allows alternate Lisp script files to be executed at startup via command line parameters. Some script functions can execute abritrary commands or cause external files to modified. VII. CVE INFORMATION The Mitre Corp.'s Common Vulnerabilities and Exposures (CVE) Project assigned the identification number CAN-2002-1250 to this issue. VIII. DISCLOSURE TIMELINE 10/15/2002 Issue disclosed to iDEFENSE 10/31/2002 Author notified 10/31/2002 iDEFENSE clients notified 11/01/2002 Response received from Jonathan Clark ([EMAIL PROTECTED]) 11/01/2002 Public disclosure IX. CREDIT Texonet (http://www.texonet.com) discovered this vulnerability. Get paid for security research http://www.idefense.com/contributor.html Subscribe to iDEFENSE Advisories: send email to [EMAIL PROTECTED], subject line: subscribe About iDEFENSE: iDEFENSE is a global security intelligence company that proactively monitors sources throughout the world ? from technical vulnerabilities and hacker profiling to the global spread of viruses and other malicious code. Our security intelligence services provide decision-makers, frontline security professionals and network administrators with timely access to actionable intelligence and decision support on cyber-related threats. For more information, visit http://www.idefense.com. - -dave David Endler, CISSP Director, Technical Intelligence iDEFENSE, Inc. 14151 Newbrook Drive Suite 100 Chantilly, VA 20151 voice: 703-344-2632 fax: 703-961-1071 [EMAIL PROTECTED] www.idefense.com -BEGIN PGP SIGNATURE- Version: PGP 7.1.2 Comment: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x4B0ACC2A iQA/AwUBPcLJckrdNYRLCswqEQKiIwCfYNMqgc3cz0u47KI072fQTtGqTN4An064 DlkW88VtmsQ+ZCyPWhAWnRms =tjox -END PGP SIGNATURE- - End forwarded message - -- Phil PGP/GPG Key: http://www.zionlth.org/~plhofmei/ wget -O - http://www.zionlth.org/~plhofmei/key.txt | gpg --import -- Excuse #238: Routing problems on the neural net pgptXRmLwjS4Z.pgp Description: PGP signature
