CVE-2015-6855

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.78% Top 15%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.debian.org/security/2015/dsa-3361 third party advisory vendor advisory
http://www.securityfocus.com/bid/76691 vdb entry third party advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html third party advisory vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html third party advisory vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2015/09/10/2 third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html mailing list third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2015/09/10/1 third party advisory mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html third party advisory vendor advisory
http://www.debian.org/security/2015/dsa-3362 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2745-1 third party advisory vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.html third party advisory vendor advisory
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html third party advisory mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html third party advisory vendor advisory
https://security.gentoo.org/glsa/201602-01 third party advisory vendor advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14 third party advisory

Frequently Asked Questions

What is the severity of CVE-2015-6855?
CVE-2015-6855 has been scored as a high severity vulnerability.
How to fix CVE-2015-6855?
To fix CVE-2015-6855, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-6855 being actively exploited in the wild?
It is possible that CVE-2015-6855 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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