CVE-2017-1000256

moderate-risk

Published 2017-10-31

libvirt version 2.3.0 and later is vulnerable to a bad default configuration of "verify-peer=no" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default.

Do I need to act?

1.0% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.1/10 High

NETWORK / HIGH complexity

Affected Products (2)

Debian Linux

Libvirt

Affected Vendors

Debian Redhat

References (8)

Third Party Advisory http://www.debian.org/security/2017/dsa-4003

Issue Tracking https://access.redhat.com/security/cve/CVE-2017-1000256

https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1556251.html

Issue Tracking https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.html

Third Party Advisory http://www.debian.org/security/2017/dsa-4003

Issue Tracking https://access.redhat.com/security/cve/CVE-2017-1000256

https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1556251.html

Issue Tracking https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.html

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moderate-risk

Severity 24/34 · High

Exploitability 3/34 · Minimal

Exposure 7/34 · Low