[UNIX] Sun Microsystems Solaris ACE_SETACL Integer Signedness DoS
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- Date: 8 May 2007 12:51:16 +0200
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Sun Microsystems Solaris ACE_SETACL Integer Signedness DoS
<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.
* 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
Sun Microsystems has addressed this vulnerability by releasing patches.
More information is available from Sun Alert ID 102869 at the following
* 11/07/2006 - Initial vendor notification
* 11/10/2006 - Initial vendor response
* 05/07/2007 - Coordinated public disclosure
The information has been provided by iDefense.
The original article can be found at:
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