Vulnerability Monitor

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CVE-2015-6855

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 7 products from qemu, from debian, from fedoraproject and 4 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-11-06T21:59:07.780

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-369

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	qemu	qemu	≤ 2.4.1	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	fedoraproject	fedora	21	Yes
Operating System	fedoraproject	fedora	22	Yes
Operating System	fedoraproject	fedora	23	Yes
Operating System	suse	linux_enterprise_desktop	12	Yes
Operating System	suse	linux_enterprise_server	12	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	15.04	Yes
Operating System	arista	eos	-	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html Mailing List, Third Party Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3361 Third Party Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3362 Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/09/10/1 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/09/10/2 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/76691 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-2745-1 Third Party Advisory ([email protected])
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201602-01 Third Party Advisory ([email protected])
https://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14 Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3361 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3362 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/09/10/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/09/10/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/76691 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2745-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201602-01 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For qemu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.