Bug 1446122 – CVE-2017-1000354 jenkins: Login command allowed impersonating any Jenkins user (SECURITY-466)

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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...

Status:	NEW

Aliases:	CVE-2017-1000354

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20170426,repor...
Keywords:	Security

Depends On:	1446133 1446134
Blocks:	1395176 1446135
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Reported:	2017-04-27 05:55 EDT by Adam Mariš
Modified:	2018-06-29 18:20 EDT (History)
CC List:	14 users (show)

See Also:
Fixed In Version:	jenkins 2.46.2, jenkins 2.57
Doc Type:	If docs needed, set a value
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-04-27 05:55:13 EDT

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 05:55:35 EDT

Acknowledgments:

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

Comment 2 Adam Mariš 2017-04-27 06:08:31 EDT

Created jenkins tracking bugs for this issue:

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

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