Vulnerability Details CVE-2018-10896
The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 13.8%
CVSS Severity
CVSS v3 Score 4.6
CVSS v2 Score 3.6
References
- https://bugs.launchpad.net/cloud-init/+bug/1781094
- https://bugzilla.redhat.com/show_bug.cgi?id=1574338
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896
- https://bugs.launchpad.net/cloud-init/+bug/1781094
- https://bugzilla.redhat.com/show_bug.cgi?id=1574338
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896
Products affected by CVE-2018-10896
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cpe:2.3:a:canonical:cloud-init:0.6.2
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cpe:2.3:a:canonical:cloud-init:0.6.3
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cpe:2.3:a:canonical:cloud-init:0.7.0
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cpe:2.3:a:canonical:cloud-init:0.7.1
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cpe:2.3:a:canonical:cloud-init:0.7.2
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cpe:2.3:a:canonical:cloud-init:0.7.3
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cpe:2.3:a:canonical:cloud-init:0.7.4
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cpe:2.3:a:canonical:cloud-init:0.7.5
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cpe:2.3:a:canonical:cloud-init:0.7.6
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cpe:2.3:a:canonical:cloud-init:0.7.7
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cpe:2.3:a:canonical:cloud-init:0.7.8
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cpe:2.3:a:canonical:cloud-init:0.7.9
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cpe:2.3:a:canonical:cloud-init:17.1
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cpe:2.3:a:canonical:cloud-init:17.2
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cpe:2.3:a:canonical:cloud-init:18.1
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cpe:2.3:a:canonical:cloud-init:18.2
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cpe:2.3:a:canonical:cloud-init:18.3