A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network Block Device (NBD) client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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 |
|---|---|
| https://access.redhat.com/errata/RHSA-2017:2392 | third party advisory vendor advisory |
| http://www.securityfocus.com/bid/96265 | vdb entry third party advisory |
| https://security.gentoo.org/glsa/201704-01 | third party advisory vendor advisory |
| http://www.openwall.com/lists/oss-security/2017/02/15/2 | mailing list third party advisory patch |
| https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg01246.html | mailing list third party advisory patch |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2630 | issue tracking third party advisory patch |
| https://bugzilla.redhat.com/show_bug.cgi?id=1422415 | |
| https://github.com/qemu/qemu/commit/2563c9c6b8670400c48e562034b321a7cf3d9a85 |