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CVE-2014-7840

7.5 · HIGH

The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in sav…

Published Dec 12, 2014qemuCWE-20EPSS 4.12%

Overview

CVE-2014-7840 is a high-severity vulnerability affecting qemu qemu. It was published on December 12, 2014 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 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

The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data.

Remediation

Check the references section for vendor advisories and patches from qemu. Update qemu to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
qemuqemu0Affected

References

Refgit.qemu.org/?p=qemu.git%3Ba=commit%3Bh=0be839a2701369f669532ea5884c15bead1c6e08Refrhn.redhat.com/errata/RHSA-2015-0349.htmlRefrhn.redhat.com/errata/RHSA-2015-0624.htmlRefthread.gmane.org/gmane.comp.emulators.qemu/306117Refbugzilla.redhat.com/show_bug.cgi?id=1163075Refexchange.xforce.ibmcloud.com/vulnerabilities/99194Refgit.qemu.org/?p=qemu.git%3Ba=commit%3Bh=0be839a2701369f669532ea5884c15bead1c6e08Refrhn.redhat.com/errata/RHSA-2015-0349.htmlRefrhn.redhat.com/errata/RHSA-2015-0624.htmlRefthread.gmane.org/gmane.comp.emulators.qemu/306117

How CyberStrike helps

Frequently asked questions

What is CVE-2014-7840?

CVE-2014-7840 is a high-severity vulnerability affecting qemu qemu. It was published on December 12, 2014 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2014-7840?

This vulnerability has a CVSS 2.0 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-2014-7840?

Check the references section for vendor advisories and patches from qemu. Update qemu to the latest patched version. 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-2014-7840?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-7840 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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