openshift-ansible up to 3.9.22/3.7.45 SSL Certificate Authentication etcd.conf improper authentication

Summaryinfo

A vulnerability was found in openshift-ansible up to 3.9.22/3.7.45. It has been declared as critical. Affected is an unknown function of the file etcd.conf of the component SSL Certificate Authentication. The manipulation results in improper authentication. This vulnerability is known as CVE-2018-1085. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in openshift-ansible up to 3.9.22/3.7.45 (Virtualization Software). It has been classified as critical. Affected is some unknown processing of the file etcd.conf of the component SSL Certificate Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

openshift-ansible before versions 3.9.23, 3.7.46 deploys a misconfigured etcd file that causes the SSL client certificate authentication to be disabled. Quotations around the values of ETCD_CLIENT_CERT_AUTH and ETCD_PEER_CLIENT_CERT_AUTH in etcd.conf result in etcd being configured to allow remote users to connect without any authentication if they can access the etcd server bound to the network on the master nodes. An attacker could use this flaw to read and modify all the data about the Openshift cluster in the etcd datastore, potentially adding another compute node, or bringing down the entire cluster.

The bug was discovered 06/13/2018. The weakness was published 06/15/2018 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2018-1085 since 12/04/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119401 (RHEL 7 : OpenShift Container Platform 3.9 (RHSA-2018:2013)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l.

Upgrading to version 3.9.23 or 3.7.46 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (119401). Similar entries are available at VDB-119379 and VDB-120135. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Virtualization Software

Name

• openshift-ansible

Version

• 3.7.0
• 3.7.1
• 3.7.2
• 3.7.3
• 3.7.4
• 3.7.5
• 3.7.6
• 3.7.7
• 3.7.8
• 3.7.9
• 3.7.10
• 3.7.11
• 3.7.12
• 3.7.13
• 3.7.14
• 3.7.15
• 3.7.16
• 3.7.17
• 3.7.18
• 3.7.19
• 3.7.20
• 3.7.21
• 3.7.22
• 3.7.23
• 3.7.24
• 3.7.25
• 3.7.26
• 3.7.27
• 3.7.28
• 3.7.29
• 3.7.30
• 3.7.31
• 3.7.32
• 3.7.33
• 3.7.34
• 3.7.35
• 3.7.36
• 3.7.37
• 3.7.38
• 3.7.39
• 3.7.40
• 3.7.41
• 3.7.42
• 3.7.43
• 3.7.44
• 3.7.45
• 3.9.0
• 3.9.1
• 3.9.2
• 3.9.3
• 3.9.4
• 3.9.5
• 3.9.6
• 3.9.7
• 3.9.8
• 3.9.9
• 3.9.10
• 3.9.11
• 3.9.12
• 3.9.13
• 3.9.14
• 3.9.15
• 3.9.16
• 3.9.17
• 3.9.18
• 3.9.19
• 3.9.20
• 3.9.21
• 3.9.22

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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