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CVE details

CVE-2018-12617

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.

Score
7.5 high
Published
2018-06-21
Links
NVD · cve.org

Affected ports (1)

PortPackageVersionStatusMaintainer
emulators/qemu-cheriqemu-cheri0.d20260108unaddressedbrooks@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>qemu-cheri</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2018-12617</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2018-12617</url>
    </references>
    <dates>
      <discovery>2018-06-21</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>