Date: Wed, 4 Jun 2014 11:00:16 -0400 (EDT) From: cve-assign@...re.org To: security@....org Cc: cve-assign@...re.org, oss-security@...ts.openwall.com Subject: Re: Xen Security Advisory 98 - insufficient permissions checks accessing guest memory on ARM -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > XSA-98 > When accessing guest memory Xen does not correctly perform permissions > checks on the (possibly guest provided) virtual address ... This > allows a guest to write to memory which it should only be able to > read. > In the event that a guest executes code from a page which has been > shared read-only with another guest it would be possible to mount a > take over attack on that guest. Use CVE-2014-3969. Our understanding is that "executes code from a page which has been shared read-only" depends on the permissions issue (lack of a check for execute permission), and is not an independent problem. - -- CVE assignment team, MITRE CVE Numbering Authority M/S M300 202 Burlington Road, Bedford, MA 01730 USA [ PGP key available through http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (SunOS) iQEcBAEBAgAGBQJTjzQrAAoJEKllVAevmvmsAYQH/1c5OC4rp6+bZvWaV6eM0INm PP2t2rOZhNjbc25Swzm7E0lnV7ZMk1Tsz8rnhd+jnf72abro9t0B87QIUGEjRIo+ mTz7CJJohynIT785wXFDTZaUJuJefi6me7KaIVKQPV37St26g0xY8O1uXLmBxxqh av0oF+ImYNZbFaTZEeGLF2gN4V54W2CZe2T3de5dn1oWemdKceJI6DWEX4NHoV/l zzAG/6/6+t/lnwSMQhfYYOgacs4u8kkrXzPCzzEZWf3ScJilawToIDU0wAO5ya5e //kLQs+PD8ENUPS41L1GjC172szfmMUmDqsDfuaJTkddmBnsXZzd50cSf24yiVc= =eSfY -----END PGP SIGNATURE-----
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.