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                             CERT-Renater

                 Note d'Information No. 2019/VULN244

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DATE                : 29/08/2019

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Jenkins versions prior to weekly
                                 2.192, LTS 2.176.3,
              IBM Application Security on Cloud versions prior to 1.2.5,
              Splunk Plugin versions prior to 1.8.0.

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https://jenkins.io/security/advisory/2019-08-28/
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Jenkins is an open source automation server which enables developers
around the world to reliably build, test, and deploy their software.
The following releases contain fixes for security vulnerabilities:

* Jenkins weekly 2.192
* Jenkins LTS 2.176.3
* IBM Application Security on Cloud 1.2.5
* Splunk Plugin 1.8.0

Summaries of the vulnerabilities are below. More details, severity,
and attribution can be found here:
https://jenkins.io/security/advisory/2019-08-28/

We provide advance notification for security updates on this mailing
list:
https://groups.google.com/d/forum/jenkinsci-advisories

If you discover security vulnerabilities in Jenkins, please report
them as described here:
https://jenkins.io/security/#reporting-vulnerabilities

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SECURITY-1453 / CVE-2019-10383
Jenkins did not properly escape the update site URL in some status
messages shown in the update center, resulting in a stored cross-site
scripting vulnerability that is exploitable by administrators and
affects other administrators.


SECURITY-1491 / CVE-2019-10384
Jenkins allowed the creation of CSRF tokens without a corresponding web
session ID. This is the result of an incomplete fix for SECURITY-626 in
the 2019-07-17 security advisory. This allowed attackers able to obtain
a CSRF token without associated session ID to implement CSRF attacks
with the following constraints:

* The token had to be created for the anonymous user (and could only be
  used for actions the anonymous user can perform)
* The victim’s IP address needed to remain unchanged (unless the proxy
  compatibility option was enabled)
* The victim must not have a valid web session at the time of the attack


SECURITY-1294 / CVE-2019-10390
Splunk Plugin has a form validation HTTP endpoint used to validate a
user-submitted Groovy script through compilation, which was not subject
to sandbox protection. This allowed attackers with Overall/Read access
to execute arbitrary code on the Jenkins master by applying AST
transforming annotations such as @Grab to source code elements.


SECURITY-1512 / CVE-2019-10391
IBM Application Security on Cloud Plugin stores service passwords in job
configurations.

While the password is stored encrypted on disk, it was transmitted in
plain text as part of the configuration form. This could result in
exposure of the password through browser extensions, cross-site
scripting vulnerabilities, and similar situations.


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+ CERT-RENATER        | tel : 01-53-94-20-44            +
+ 23/25 Rue Daviel    | fax : 01-53-94-20-41            +
+ 75013 Paris         | email:cert@support.renater.fr   +
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