oss-sec mailing list archives
Re: CVE request Qemu: usb: null pointer dereference in remote NDIS control message handling
From: cve-assign () mitre org
Date: Tue, 16 Feb 2016 13:16:17 -0500 (EST)
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Qemu emulator built with the USB Net device emulation support is vulnerable to a NULL pointer dereference issue. It could occur while processing remote NDIS control message packets, when the USB configuration descriptor object is null. A privileged user inside guest could use this flaw to crash the Qemu process instance resulting in DoS. https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg02553.html https://bugzilla.redhat.com/show_bug.cgi?id=1302299
When processing remote NDIS control message packets, the USB Net device emulator checks to see if the USB configuration descriptor object is of RNDIS type(2). But it does not check if it is null, which leads to a null dereference error. Add check to avoid it.
Use CVE-2016-2392. This is not yet available at http://git.qemu.org/?p=qemu.git;a=history;f=hw/usb/dev-network.c but that may be an expected place for a later update. - -- 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 iQIcBAEBCAAGBQJWw2azAAoJEL54rhJi8gl5P9kP/Rs4ZAE8ZXhvH4ToA3otZhpg wAh8ottOV8upMXJbpvsAorv3GNZ8mhV54fda4PUACFFO7sBt6vC8TU+9jy8r9Ey2 4anpNmRyEh7Dhb5DayV5SAIst5scurFfjM6xRiLq2TYkYTDsgV/hwG3a5h1gQ9yn VyrmPpSkQi5RFU74HWn0ZAfFa+/ohsClTEy6pWORNtznzd2Ie5Pzwunjda3Wofxc cGr+xfh+pFUTIFhyWL1E6N1aoRaj7eYjB/b+23qKo6uAjgYYg9KB4WkbblUSMvOM J5Tin3cbQI8E5EAe5N0oR5KKDYrmsSL6LxUnl+kctnxg19M35jSAWm6Mb9z7X/wn b1q6PZ1/P1PegIheyaI8SwmJGJpB7s1uaanPPQEWuF9IdmDUoacBKcuSHZgHfBaJ R4EQ7gpomp7+pEva4HxRuRPHFyrY8Cc9fZaPig8Oz3SwlhkcJEcREqgxzWEUE/K4 6gMdIPWQ3x/trX+Q+FbG0sdcPJ3kEXVVqdxcNAFk8A3oiWYptNAWVUWzKZQlk4tY SbaMcp3T6ZBdv5d3v2jI6Au3ReZrJsfpslcYZ+57QXvaxGdkfa/eIe6irPWHUt7c F2qVi29w7MN9KLzs4VYsu11Yu4dWFlfui4/BGJF0uFGn3V++nXnmA/5fPzmKcn2G FJMS80TAffgwEurUNih2 =XXSy -----END PGP SIGNATURE-----
Current thread:
- CVE request Qemu: usb: null pointer dereference in remote NDIS control message handling P J P (Feb 16)
- Re: CVE request Qemu: usb: null pointer dereference in remote NDIS control message handling cve-assign (Feb 16)