| 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: <4537D6CE.8030700@idefense.com> Date: Thu, 19 Oct 2006 15:49:34 -0400 From: iDefense Labs <labs-no-reply@...fense.com> To: idlabs-advisories@...fense.com, vulnwatch@...nwatch.org, full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com Subject: iDefense Security Advisory 10.19.06: Kaspersky Labs Anti-Virus IOCTL Local Privilege Escalation Vulnerability Kaspersky Labs Anti-Virus IOCTL Local Privilege Escalation Vulnerability iDefense Security Advisory 10.19.06 http://www.idefense.com/intelligence/vulnerabilities/ Oct 19, 2006 I. BACKGROUND Kaspersky Anti-Virus provides virus and spyware protection. More information about Kaspersky Labs Anti-Virus can be found by visiting http://www.kaspersky.com/ II. DESCRIPTION Local exploitation of a design error vulnerability in Kaspersky Labs Anti-Virus allows an attacker to execute arbitrary code with kernel privileges. The vulnerability specifically exists due to improper address space validation when the KLIN and KLICK device drivers processes IOCTL 0x80052110. By passing a specially crafted Irp structure to the affected IOCTL handler, attackers can cause the driver to execute arbitrary code via a CALL instruction using user supplied data. Execution of data stored in user-land buffers is trivial. III. ANALYSIS Exploitation allows attackers to gain elevated privileges by executing code within kernel context. This allows attackers to gain control of the affected system. However, local access is required for exploitation to be successful. IV. DETECTION iDefense has confirmed the existence of this vulnerability within version 2.0.0.281 of the KLICK and KLIN device drivers as shipped with 6.0.0.303 of Kaspersky Labs Anti-Virus. Previous versions are suspected to be vulnerable as well. V. WORKAROUND iDefense is currently unaware of any effective workaround for this issue. VI. VENDOR RESPONSE Kaspersky Labs has addressed this vulnerability with version 2.0.0.333 of the KLIN.sys and KLICK.sys device drivers. These drivers can be obtained by utilizing Kaspersky's Update update service. VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2006-4926 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 09/18/2006 Initial vendor notification 09/19/2006 Initial vendor response 10/19/2006 Coordinated public disclosure IX. CREDIT This vulnerability was reported to iDefense by Rubén Santamarta of reversemode.com. Get paid for vulnerability research http://www.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2006 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 email 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