CVE-2017-1000256
HIGHCVSS 8.1/10EPSS 1.70%
Last modified
CVE-2017-1000256 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Libvirt | >= 2.3.0, < 3.9.0 |
| Debian | Debian Linux | 9.0 |
References
- http://www.debian.org/security/2017/dsa-4003Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-1000256Issue Tracking, Vendor Advisory
- https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.htmlIssue Tracking, Vendor Advisory
- http://www.debian.org/security/2017/dsa-4003Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-1000256Issue Tracking, Vendor Advisory
- https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.htmlIssue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-1000256?
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.
How severe is CVE-2017-1000256?
CVE-2017-1000256 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.
How do I fix CVE-2017-1000256?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2017-1000256?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST