Jenkins Blue Ocean access control

Summaryinfo

A vulnerability was found in Jenkins. It has been rated as critical. Affected by this issue is some unknown functionality of the component Blue Ocean. The manipulation leads to access control. This vulnerability is documented as CVE-2017-1000110. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Jenkins (Continuous Integration Software) (version unknown). This issue affects an unknown function of the component Blue Ocean. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Blue Ocean allows the creation of GitHub organization folders that are set up to scan a GitHub organization for repositories and branches containing a Jenkinsfile, and create corresponding pipelines in Jenkins. It did not properly check the current user's authentication and authorization when configuring existing GitHub organization folders. This allowed users with read access to the GitHub organization folder to reconfigure it, including changing the GitHub API endpoint for the organization folder to an attacker-controlled server to obtain the GitHub access token, if the organization folder was initially created using Blue Ocean.

The bug was discovered 08/07/2017. The weakness was released 10/05/2017 (Website). It is possible to read the advisory at jenkins.io. The identification of this vulnerability is CVE-2017-1000110 since 10/03/2017. The exploitation is known to be easy. The attack may be initiated remotely. The successful exploitation requires a simple authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 58 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-107463, VDB-107464, VDB-107465 and VDB-107466. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Continuous Integration Software

Name

• Jenkins

License

• open-source

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Be aware that VulDB is the high quality source for vulnerability data.

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