The esp_reg_write function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check command buffer length, which allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the QEMU host via unspecified vectors.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.ubuntu.com/usn/USN-3047-1 | third party advisory vendor advisory |
| http://www.securityfocus.com/bid/90760 | third party advisory vdb entry |
| https://security.gentoo.org/glsa/201609-01 | third party advisory vendor advisory |
| http://www.ubuntu.com/usn/USN-3047-2 | third party advisory vendor advisory |
| https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg03273.html | patch mailing list third party advisory |
| http://www.openwall.com/lists/oss-security/2016/05/19/3 | patch mailing list third party advisory |
| https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html | third party advisory mailing list |
| https://bugzilla.redhat.com/show_bug.cgi?id=1337502 | third party advisory vdb entry issue tracking |