Bug 1446122 (CVE-2017-1000354) - CVE-2017-1000354 jenkins: Login command allowed impersonating any Jenkins user (SECURITY-466)
Summary: CVE-2017-1000354 jenkins: Login command allowed impersonating any Jenkins use...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-1000354
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1446133 1446134
Blocks: 1395176 1446135
TreeView+ depends on / blocked
 
Reported: 2017-04-27 09:55 UTC by Adam Mariš
Modified: 2021-10-21 11:53 UTC (History)
13 users (show)

Fixed In Version: jenkins 2.46.2, jenkins 2.57
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Clone Of:
Environment:
Last Closed: 2021-10-21 11:53:39 UTC
Embargoed:


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Description Adam Mariš 2017-04-27 09:55:13 UTC
The login command available in the remoting-based CLI stored the encrypted user name of the successfully authenticated user in a cache file used to authenticate further commands. Users with sufficient permission to create secrets in Jenkins, and download their encrypted values (e.g. with Job/Configure permission), were able to impersonate any other Jenkins user on the same instance.

This has been fixed by storing the cached authentication as a hash-based MAC with a key specific to the Jenkins instance and the CLI authentication cache.

Previously cached authentications are invalidated when upgrading Jenkins to a version containing a fix for this.

Affected versions:

    All Jenkins main line releases up to and including 2.56
    All Jenkins LTS releases up to and including 2.46.1

Fixed in:

    Jenkins main line users should update to 2.57
    Jenkins LTS users should update to 2.46.2

External Reference:

https://jenkins.io/security/advisory/2017-04-26/#cli-login-command-allowed-impersonating-any-jenkins-user

Comment 1 Adam Mariš 2017-04-27 09:55:35 UTC
Acknowledgments:

Name: the Jenkins project
Upstream: Jesse Glick (CloudBees)

Comment 2 Adam Mariš 2017-04-27 10:08:31 UTC
Created jenkins tracking bugs for this issue:

Affects: fedora-all [bug 1446133]
Affects: openshift-1 [bug 1446134]


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