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From: SecuriTeam <support@securiteam.com.> To: list@securiteam.com Date: 8 May 2007 12:51:16 +0200 Subject: [UNIX] Sun Microsystems Solaris ACE_SETACL Integer Signedness DoS Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20070508144428.91C755866@mail.tyumen.ru.> X-Virus-Scanned: antivirus-gw at tyumen.ru The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com - - promotion The SecuriTeam alerts list - Free, Accurate, Independent. Get your security news from a reliable source. http://www.securiteam.com/mailinglist.html - - - - - - - - - Sun Microsystems Solaris ACE_SETACL Integer Signedness DoS ------------------------------------------------------------------------ SUMMARY <http://www.sun.com/software/solaris/>; Solaris is a UNIX operating system developed by Sun Microsystems. Local exploitation of an integer signedness error in Sun Microsystem's Solaris could allow attackers to cause a kernel panic, leading to a DoS condition on the affected computer. DETAILS Vulnerable Systems: * Solaris version 10 on x86 and SPARC architectures. The facl() system call is used to set access controls on a file. Due to an improper check on one of the arguments passed to this function, an attacker can cause the kernel allocate a large amount of memory which causes a kernel panic. Exploitation of this vulnerability would most likely result in a DoS condition on the affected host. However, there are other functions called by this function that use the result of the multiplication performed to allocate memory. On a 64 bit kernel with several gigabytes of RAM, code execution may be possible. Fixing this vulnerability will also fix the later vulnerabilities. Vendor Status: Sun Microsystems has addressed this vulnerability by releasing patches. More information is available from Sun Alert ID 102869 at the following URL. <http://sunsolve.sun.com/search/document.do?assetkey=1-26-102869-1>; http://sunsolve.sun.com/search/document.do?assetkey=1-26-102869-1 Disclosure Timeline: * 11/07/2006 - Initial vendor notification * 11/10/2006 - Initial vendor response * 05/07/2007 - Coordinated public disclosure ADDITIONAL INFORMATION The information has been provided by iDefense. The original article can be found at: <http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=524>; http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=524
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