| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <4798E4A9.5030004@idefense.com> Date: Thu, 24 Jan 2008 14:19:05 -0500 From: iDefense Labs <labs-no-reply@...fense.com> To: vulnwatch@...nwatch.org, full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com Subject: iDefense Security Advisory 01.23.08: IBM AIX pioout BSS Buffer Overflow Vulnerability iDefense Security Advisory 01.23.08 http://labs.idefense.com/intelligence/vulnerabilities/ Jan 23, 2008 I. BACKGROUND The pioout program is a set-uid root application, installed by default under multiple versions of IBM AIX, that is used to interface with the printer driver. For more information, visit the following URL. http://publib.boulder.ibm.com/infocenter/pseries/v5r3/topic/com.ibm.aix.cmds/doc/aixcmds4/pioout.htm II. DESCRIPTION Local exploitation of a buffer overflow vulnerability in IBM Corp.'s AIX operating system 'pioout' program allows attackers to execute arbitrary code with root privileges. The vulnerability exists due to insufficient input validation when copying user-supplied data to a fixed-size buffer. By passing a long string as a command line option, an attacker can cause an exploitable buffer overflow. III. ANALYSIS Exploitation of this vulnerability results in the execution of arbitrary code with root privileges. In order to exploit this vulnerability, an attacker must have access to execute the set-uid root 'pioout' program. IV. DETECTION iDefense has confirmed the existence of this vulnerability in version 5.2 and 5.3 of AIX with all patches applied as of November 29th, 2007. Previous versions are suspected to be affected. V. WORKAROUND Removing the set-uid bit from the binary will prevent exploitation, but will also make the program unusable by non-root users. VI. VENDOR RESPONSE IBM Corp. has addressed this vulnerability by releasing interim fixes. More information can be found via the Bulletins tab of IBM's Subscription Service for UNIX and Linux servers. You can reach this service by clicking the URL shown below. http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=1 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-5764 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 11/29/2007 Initial vendor notification 12/03/2007 Initial vendor response 01/23/2008 Coordinated public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2008 iDefense, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@...fense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Powered by blists - more mailing lists