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CVE-2015-6855

7.5 · HIGH

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certai…

Published Nov 6, 2015qemuCWE-369EPSS 3.50%

Overview

CVE-2015-6855 is a high-severity vulnerability affecting qemu qemu. It was published on November 6, 2015 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

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash.

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

Reflists.fedoraproject.org/pipermail/package-announce/2015-October/168602.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-October/169036.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-October/169039.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-October/169327.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-October/169341.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-September/167369.htmlReflists.opensuse.org/opensuse-security-announce/2015-10/msg00019.htmlRefwww.debian.org/security/2015/dsa-3361Refwww.debian.org/security/2015/dsa-3362Refwww.openwall.com/lists/oss-security/2015/09/10/1

How CyberStrike helps

Frequently asked questions

What is CVE-2015-6855?

CVE-2015-6855 is a high-severity vulnerability affecting qemu qemu. It was published on November 6, 2015 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2015-6855?

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-2015-6855?

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-2015-6855?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-6855 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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