ESB-2018.1133 - [Win][UNIX/Linux] Jenkins: Cross-site scripting - Existing account 2018-04-12

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1133
                   Jenkins Security Advisory 2018-04-11
                               12 April 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Jenkins
Publisher:         Jenkins
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Cross-site Scripting     -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://jenkins.io/security/advisory/2018-04-11/

- --------------------------BEGIN INCLUDED TEXT--------------------

Jenkins Security Advisory 2018-04-11

This advisory announces vulnerabilities in the following Jenkins deliverables:

  * Jenkins (core)

Descriptions

CLI leaked existence of views and agents with attacker-specified names to users
without Overall/Read permission

SECURITY-754 / CVE pending

The Jenkins CLI sent different error responses for commands with view and agent
arguments depending on the existence of the specified views or agents to
unauthorized users. This allowed attackers to determine whether views or agents
with specified names exist.

The Jenkins CLI now returns the same error messages to unauthorized users
independent of the existence of specified view or agent names.

Cross-site scripting vulnerability in confirmation dialogs displaying item
names

SECURITY-759 / CVE pending

Some JavaScript confirmation dialogs included the item name in an unsafe
manner, resulting in a possible cross-site scripting vulnerability exploitable
by users with permission to create or configure items.

JavaScript confirmation dialogs that include the item name now properly escape
it, so it can be safely displayed.

Severity

  * SECURITY-754: low
  * SECURITY-759: medium

Affected Versions

  * Jenkins weekly up to and including 2.115
  * Jenkins LTS up to and including 2.107.1

Fix

  * Jenkins weekly should be updated to version 2.116
  * Jenkins LTS should be updated to version 2.107.2

These versions include fixes to the vulnerabilities described above. All prior
versions are considered to be affected by these vulnerabilities unless
otherwise indicated.

Credit

The Jenkins project would like to thank the reporters for discovering and
reporting these vulnerabilities:

  * Assaf Berg for SECURITY-754
  * Jesper den Boer for SECURITY-759

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=taAK
-----END PGP SIGNATURE-----

« Back to bulletins