National Vulnerability Database

National Vulnerability Database

National Vulnerability
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    Vulnerabilities Detail

CVE-2018-12617 Detail

Current 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.

Source:  MITRE
Description Last Modified:  06/21/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/104531 Third Party Advisory VDB Entry
https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6 Exploit
https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html Patch Third Party Advisory
https://www.exploit-db.com/exploits/44925/ Exploit Third Party Advisory VDB Entry

Technical Details

Vulnerability Type (View All)

  • Integer Overflow or Wraparound (CWE-190)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*    versions up to (including) 2.12.50

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-12617
NVD Published Date:
06/21/2018
NVD Last Modified:
08/23/2018