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Category:   Application (Multimedia)  >   Adobe Flash Player Vendors:   Adobe Systems Incorporated
(Red Hat Issues Fix) Adobe Flash Player Use-After-Free and Type Confusion Errors Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1040537
SecurityTracker URL:  http://securitytracker.com/id/1040537
CVE Reference:   CVE-2018-4919, CVE-2018-4920   (Links to External Site)
Date:  Mar 15 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Two vulnerabilities were reported in Adobe Flash Player. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create specially crafted content that, when loaded by the target user, will trigger a use-after-free memory error and execute arbitrary code on the target user's system [CVE-2018-4919].

A remote user can create specially crafted content that, when loaded by the target user, will trigger a type confusion error and execute arbitrary code on the target user's system [CVE-2018-4920].

Yuki Chen of Qihoo 360 Vulcan Team (via the Chromium Vulnerability Rewards Program) reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://access.redhat.com/errata/RHSA-2018:0520

Vendor URL:  access.redhat.com/errata/RHSA-2018:0520 (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.
Mar 13 2018 Adobe Flash Player Use-After-Free and Type Confusion Errors Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2018:0520-01] Critical: flash-plugin security update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: flash-plugin security update
Advisory ID:       RHSA-2018:0520-01
Product:           Red Hat Enterprise Linux Supplementary
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:0520
Issue date:        2018-03-14
CVE Names:         CVE-2018-4919 CVE-2018-4920 
=====================================================================

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 Critical. 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 29.0.0.113.

Security Fix(es):

* flash-plugin: Use After Free - remote code execution vulnerability
(APSB18-05) (CVE-2018-4919)

* flash-plugin: Type Confusion - remote code execution vulnerability
(APSB18-05) (CVE-2018-4920)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

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/):

1555029 - CVE-2018-4919 flash-plugin: Use After Free - remote code execution vulnerability (APSB18-05)
1555030 - CVE-2018-4920 flash-plugin: Type Confusion - remote code execution vulnerability (APSB18-05)

6. Package List:

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

i386:
flash-plugin-29.0.0.113-1.el6_9.i686.rpm

x86_64:
flash-plugin-29.0.0.113-1.el6_9.i686.rpm

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

i386:
flash-plugin-29.0.0.113-1.el6_9.i686.rpm

x86_64:
flash-plugin-29.0.0.113-1.el6_9.i686.rpm

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

i386:
flash-plugin-29.0.0.113-1.el6_9.i686.rpm

x86_64:
flash-plugin-29.0.0.113-1.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-2018-4919
https://access.redhat.com/security/cve/CVE-2018-4920
https://access.redhat.com/security/updates/classification/#critical
https://helpx.adobe.com/security/products/flash-player/apsb18-05.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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