Note:
This project will be discontinued after December 13, 2021. [more]
2018-06-21
qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.
Products | Ubuntu_linux, Debian_linux, Qemu |
Type | Integer Overflow or Wraparound (CWE-190) |
First patch | - None (likely due to unavailable code) |
Links |
• https://usn.ubuntu.com/3826-1/
• https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html • https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html • http://www.securityfocus.com/bid/104531 • https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6 |