(Red Hat Issues Fix) Adobe Flash Player Use-After-Free Memory Error Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1037133 |
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SecurityTracker URL: http://securitytracker.com/id/1037133
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CVE Reference:
CVE-2016-7855
(Links to External Site)
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Date: Oct 27 2016
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 23.0.0.185 and prior
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Description:
A vulnerability was 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.
[Editor's note: This vulnerability is being actively exploited against Windows 7, 8.1, and 10 systems.]
Neel Mehta and Billy Leonard from Google's Threat Analysis Group reported this vulnerability.
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Impact:
A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
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Solution:
Red Hat has issued a fix.
The Red Hat advisory is available at:
https://rhn.redhat.com/errata/RHSA-2016-2119.html
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Vendor URL: rhn.redhat.com/errata/RHSA-2016-2119.html (Links to External Site)
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Cause:
Access control error
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Underlying OS: Linux (Red Hat Enterprise)
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Underlying OS Comments: 5, 6
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Subject: [RHSA-2016:2119-01] Critical: flash-plugin security update
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Critical: flash-plugin security update
Advisory ID: RHSA-2016:2119-01
Product: Red Hat Enterprise Linux Supplementary
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2119.html
Issue date: 2016-10-27
CVE Names: CVE-2016-7855
=====================================================================
1. Summary:
An update for flash-plugin is now available for Red Hat Enterprise Linux 5
Supplementary and 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. 5) - i386, x86_64
Red Hat Enterprise Linux Desktop Supplementary (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server Supplementary (v. 5) - 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 11.2.202.643.
Security Fix(es):
* This update fixes one vulnerability in Adobe Flash Player. This
vulnerability, detailed in the Adobe Security Bulletin listed in the
References section, could allow an attacker to create a specially crafted
SWF file that would cause flash-plugin to crash, execute arbitrary code, or
disclose sensitive information when the victim loaded a page containing the
malicious SWF content. (CVE-2016-7855)
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/):
1389033 - CVE-2016-7855 flash-plugin: user-after-free issues fixed in APSB16-36
6. Package List:
Red Hat Enterprise Linux Desktop Supplementary (v. 5):
i386:
flash-plugin-11.2.202.643-1.el5_11.i386.rpm
x86_64:
flash-plugin-11.2.202.643-1.el5_11.i386.rpm
Red Hat Enterprise Linux Server Supplementary (v. 5):
i386:
flash-plugin-11.2.202.643-1.el5_11.i386.rpm
x86_64:
flash-plugin-11.2.202.643-1.el5_11.i386.rpm
Red Hat Enterprise Linux Desktop Supplementary (v. 6):
i386:
flash-plugin-11.2.202.643-1.el6_8.i686.rpm
x86_64:
flash-plugin-11.2.202.643-1.el6_8.i686.rpm
Red Hat Enterprise Linux Server Supplementary (v. 6):
i386:
flash-plugin-11.2.202.643-1.el6_8.i686.rpm
x86_64:
flash-plugin-11.2.202.643-1.el6_8.i686.rpm
Red Hat Enterprise Linux Workstation Supplementary (v. 6):
i386:
flash-plugin-11.2.202.643-1.el6_8.i686.rpm
x86_64:
flash-plugin-11.2.202.643-1.el6_8.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-2016-7855
https://access.redhat.com/security/updates/classification/#critical
https://helpx.adobe.com/security/products/flash-player/apsb16-36.html
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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