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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html	Mailing List Patch Third Party Advisory
https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6	Exploit Third Party Advisory
http://www.securityfocus.com/bid/104531	Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/44925/	Exploit Third Party Advisory VDB Entry
https://usn.ubuntu.com/3826-1/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html	Mailing List Third Party Advisory
https://www.debian.org/security/2019/dsa-4454	Third Party Advisory
https://seclists.org/bugtraq/2019/May/76	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*

Configuration 3 (hide)

OR	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

Information

Published : 2018-06-21 11:29

Updated : 2020-11-19 08:35

NVD link : CVE-2018-12617

Mitre link : CVE-2018-12617

JSON object : View

CWE

CWE-190

Integer Overflow or Wraparound

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Products Affected

debian

debian_linux

canonical

ubuntu_linux

qemu

qemu

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