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CVE-2018-12617

7.5 · HIGH

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 f…

Published Jun 21, 2018CWE-190EPSS 25.05%

Overview

CVE-2018-12617 is a high-severity vulnerability. It was published on June 21, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/104531GitHubgist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6Reflists.debian.org/debian-lts-announce/2019/02/msg00041.htmlReflists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.htmlRefseclists.org/bugtraq/2019/May/76Refusn.ubuntu.com/3826-1/Refwww.debian.org/security/2019/dsa-4454Refwww.exploit-db.com/exploits/44925/Refwww.securityfocus.com/bid/104531GitHubgist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12617?

CVE-2018-12617 is a high-severity vulnerability. It was published on June 21, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2018-12617?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-12617?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-12617?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12617 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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