cve/2018/CVE-2018-12617.md

CVE-2018-12617

Description

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.

POC

Reference

• https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6
• https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6
• https://www.exploit-db.com/exploits/44925/
• https://www.exploit-db.com/exploits/44925/

Github

No PoCs found on GitHub currently.