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AUSCERT External Security Bulletin Redistribution
ESB-2014.1034
Symantec Encryption Desktop for OS X World-Writable Files
Insecure File Handling
25 June 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Symantec Encryption Desktop
Publisher: Symantec
Operating System: OS X
Impact/Access: Modify Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3431
Original Bulletin:
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20140620_00
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Security Advisories Relating to Symantec Products - Symantec Encryption
Desktop for OS X World-Writable Files Insecure File Handling
SYM14-011
June 20, 2014
Revisions
None
Severity
CVSS2 Base Score Impact Exploitability CVSS2 Vector
Symantec Encryption Desktop for OS X World-Writable Files Insecure File
Handling
4.25 6.4 3.1 AV:L/AC:L/AU:S/C:P/I:P/A:P
Overview
Symantecs Encryption Desktop for OS X installs some temporary files with
world-writable attributes during installation. In a multi-user environment, a
malicious user could manipulate these world-writable files to read and write
files or create files with another users permissions
Product(s) Affected
Product Version Build Solution
Symantec PGP Desktop for OS X 10.0.x
10.1.x
10.2.x All Symantec Encryption
Desktop 10.3.2
Maintenance Pack 2
Symantec Encryption Desktop
Professional for OS X 10.3.0
10.3.1
10.3.2 All Symantec Encryption
Desktop 10.3.2
Maintenance Pack 2
Details
Symantec was notified of Symantec Encryption Desktop for OS X installing
temporary files with world-writeable permissions. In a multi-user environment,
a malicious user could manipulate these weak file permissions to create new
files or change permissions on an existing file with another users permissions
whenever the targeted user accesses Symantec Encryption Desktop. This could
potentially allow an authorized but non-privileged user to gain unauthorized
access to or create arbitrary files with another system users potentially
privileged access.
Symantec Response
Symantec engineers verified these finding and have released an update in
Symantec Encryption Desktop 10.3.2 maintenance pack 2 for OS X addressing the
issue.
Update information
Customers may obtain Symantec Desktop Encryption maintenance updates through
their normal Symantec support locations.
Best Practices
As part of normal best practices, Symantec strongly recommends:
Restrict access to administration or management systems to privileged
users.
Disable remote access if not required or restrict it to trusted/authorized
systems only.
Where possible, limit exposure of application and web interfaces to
trusted/internal networks only.
Keep all operating systems and applications updated with the latest vendor
patches.
Follow a multi-layered approach to security. Run both firewall and
anti-malware applications, at a minimum, to provide multiple points of
detection and protection to both inbound and outbound threats.
Deploy network and host-based intrusion detection systems to monitor
network traffic for signs of anomalous or suspicious activity. This may aid in
detection of attacks or malicious activity related to exploitation of latent
vulnerabilities
Credit
Symantec would like to thank Aaron Sigel for reporting this and working with
Symantec as we addressed it.
References
BID: Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID
(BID) to this issue for inclusion in the Security Focus vulnerability
database.
CVE: This issue is a candidate for inclusion in the CVE list
(http://cve.mitre.org), which standardizes names for security problems.
CVE BID Description
CVE-2014-3431 BID 68077 Symantec Encryption Desktop for OS X
World-Writable Files Insecure File
Handling
Symantec takes the security and proper functionality of our products very
seriously. As founding members of the Organization for Internet Safety
(OISafety), Symantec supports and follows responsible disclosure guidelines.
Please contact secure@symantec.com if you feel you have discovered a security
issue in a Symantec product. A member of the Symantec Product Security team
will contact you regarding your submission to coordinate any required
response. Symantec strongly recommends using encrypted email for reporting
vulnerability information to secure@symantec.com. The Symantec Product
Security PGP key can be found at the location below.
Symantec has developed a Product Vulnerability Response document outlining the
process we follow in addressing suspected vulnerabilities in our products.
This document is available below.
Symantec Vulnerability Response Policy
Symantec Product Vulnerability Management PGP Key Symantec Product
Vulnerability Management PGP Key
Copyright (c) by Symantec Corp.
Permission to redistribute this alert electronically is granted as long as it
is not edited in any way unless authorized by Symantec Product Security.
Reprinting the whole or part of this alert in any medium other than
electronically requires permission from secure@symantec.com
Disclaimer
The information in the advisory is believed to be accurate at the time of
publishing based on currently available information. Use of the information
constitutes acceptance for use in an AS IS condition. There are no warranties
with regard to this information. Neither the author nor the publisher accepts
any liability for any direct, indirect, or consequential loss or damage
arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Product Security, and
secure@symantec.com are registered trademarks of Symantec Corp. and/or
affiliated companies in the United States and other countries. All other
registered and unregistered trademarks represented in this document are the
sole property of their respective companies/owners.
* Signature names may have been updated to comply with an updated IPS
Signature naming convention. See
http://www.symantec.com/business/support/index?page=content&id=TECH152794&key=54619&actp=LIST
for more information.
Last modified on: June 20, 2014
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