CVE-2009-1895
CVE-2009-1895
The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).
Productos afectados
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Hablar con TrueHacking →Referencias
http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.htmlhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6http://patchwork.kernel.org/patch/32598/https://bugs.launchpad.net/bugs/cve/2009-1895http://secunia.com/advisories/35801http://secunia.com/advisories/36045http://secunia.com/advisories/36051http://secunia.com/advisories/36054http://secunia.com/advisories/36116http://secunia.com/advisories/36131http://secunia.com/advisories/36759http://secunia.com/advisories/37471