Vulnerability Details : 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.
Exploit prediction scoring system (EPSS) score for CVE-2017-1000256
Probability of exploitation activity in the next 30 days: 0.23%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 61 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-1000256
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.2
|
5.9
|
NIST |
CWE ids for CVE-2017-1000256
-
The product does not validate, or incorrectly validates, a certificate.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-1000256
-
https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1556251.html
Bug#878799: CVE-2017-1000256/LSN-2017-0002: TLS certificate verification disabled for clientsIssue Tracking;Mailing List;Third Party Advisory
-
https://access.redhat.com/security/cve/CVE-2017-1000256
CVE-2017-1000256 - Red Hat Customer PortalIssue Tracking;Vendor Advisory
-
http://www.debian.org/security/2017/dsa-4003
Debian -- Security Information -- DSA-4003-1 libvirtThird Party Advisory
-
https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.html
[Libvirt-announce] LSN-2017-0002 - TLS certificate verification disabledIssue Tracking;Vendor Advisory
Products affected by CVE-2017-1000256
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*