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Category:   Application (Multimedia)  >   Adobe Flash Player Vendors:   Adobe Systems Incorporated
(Red Hat Issues Fix) Adobe Flash Out-of-Bounds Memory Read Error Lets Remote Users Obtain Potentially Sensitive Information on the Target System
SecurityTracker Alert ID:  1040159
SecurityTracker URL:  http://securitytracker.com/id/1040159
CVE Reference:   CVE-2018-4871   (Links to External Site)
Date:  Jan 11 2018
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Adobe Flash. A remote user can obtain potentially sensitive information on the target system.

A remote user can create specially crafted content that, when loaded by the target user, will trigger an out-of-bounds read error and gain read access to potentially sensitive information on the target system.

An anonymous researcher (via Trend Micro's Zero Day Initiative) reported this vulnerability.

Impact:   A remote user can obtain potentially sensitive information on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://access.redhat.com/errata/RHSA-2018:0081

Vendor URL:  access.redhat.com/errata/RHSA-2018:0081 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6

Message History:   This archive entry is a follow-up to the message listed below.
Jan 10 2018 Adobe Flash Out-of-Bounds Memory Read Error Lets Remote Users Obtain Potentially Sensitive Information on the Target System



 Source Message Contents

Subject:  [RHSA-2018:0081-01] Important: flash-plugin security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: flash-plugin security update
Advisory ID:       RHSA-2018:0081-01
Product:           Red Hat Enterprise Linux Supplementary
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:0081
Issue date:        2018-01-10
CVE Names:         CVE-2017-11305 CVE-2018-4871 
=====================================================================

1. Summary:

An update for flash-plugin is now available for Red Hat Enterprise Linux 6
Supplementary.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop Supplementary (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server Supplementary (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Supplementary (v. 6) - i386, x86_64

3. Description:

The flash-plugin package contains a Mozilla Firefox compatible Adobe Flash
Player web browser plug-in.

This update upgrades Flash Player to version 28.0.0.137.

Security Fix(es):

* This update fixes multiple vulnerabilities in Adobe Flash Player. These
vulnerabilities, detailed in the Adobe Security Bulletins listed in the
References section, could allow an attacker to create a specially crafted
SWF file that would cause flash-plugin to disclose sensitive information or
modify its settings when the victim loaded a page containing the malicious
SWF content. (CVE-2017-11305, CVE-2018-4871)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1525508 - CVE-2017-11305 flash-plugin: unintended reset of global settings preference file vulnerability (APSB17-42)
1532810 - CVE-2018-4871 flash-plugin: out-of-bounds read causing information leak (APSB18-01)

6. Package List:

Red Hat Enterprise Linux Desktop Supplementary (v. 6):

i386:
flash-plugin-28.0.0.137-1.el6_9.i686.rpm

x86_64:
flash-plugin-28.0.0.137-1.el6_9.i686.rpm

Red Hat Enterprise Linux Server Supplementary (v. 6):

i386:
flash-plugin-28.0.0.137-1.el6_9.i686.rpm

x86_64:
flash-plugin-28.0.0.137-1.el6_9.i686.rpm

Red Hat Enterprise Linux Workstation Supplementary (v. 6):

i386:
flash-plugin-28.0.0.137-1.el6_9.i686.rpm

x86_64:
flash-plugin-28.0.0.137-1.el6_9.i686.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2017-11305
https://access.redhat.com/security/cve/CVE-2018-4871
https://access.redhat.com/security/updates/classification/#important
https://helpx.adobe.com/security/products/flash-player/apsb17-42.html
https://helpx.adobe.com/security/products/flash-player/apsb18-01.html

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2018 Red Hat, Inc.
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