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Category:   Application (Generic)  >   Perl Vendors:   Wall, Larry
(HP Issues Fix for Tru64 UNIX) Perl Regex Processing Bug May Let Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019456
SecurityTracker URL:  http://securitytracker.com/id/1019456
CVE Reference:   CVE-2007-5116   (Links to External Site)
Date:  Feb 20 2008
Impact:   Execution of arbitrary code via local system, Execution of arbitrary code via network, User access via local system, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.8
Description:   A vulnerability was reported in Perl. A local or remote user can execute arbitrary code on the target system.

A remote or local user may be able to supply a specially crafted regular expression to execute arbitrary code on the target system.

Tavis Ormandy and Will Drewry reported this vulnerability.

Impact:   A local or remote user can execute arbitrary code on the target system.
Solution:   HP has released the following Early Release Patch kits.

HP Tru64 UNIX Version v5.1B-4
PREREQUISITE: HP Tru64 UNIX v5.1B-4 PK6 (BL27)
Name: perl_V51BB27-ES-20080207
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=perl_V51BB27-ES-20080207

HP Tru64 UNIX Version v5.1B-3
PREREQUISITE: HP Tru64 UNIX v5.1B-3 PK5 (BL26)
Name: perl_V51BB26-ES-20080204
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001399-V51BB26-ES-20071207

Internet Express (IX) for HP Tru64 UNIX v 6.7
PREREQUISITE: HP Tru64 UNIX v5.1B-3 PK5 (BL26) or HP Tru64 UNIX v5.1B-3 PK5 (BL26)
NOTE: Use the Perl patch kit appropriate to the operating system version

The HP advisory is available at:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01362465

Vendor URL:  h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01362465 (Links to External Site)
Cause:   Input validation error
Underlying OS:  UNIX (Tru64)
Underlying OS Comments:  5.1B-3, 5.1B-4

Message History:   This archive entry is a follow-up to the message listed below.
Nov 6 2007 Perl Regex Processing Bug May Let Users Execute Arbitrary Code



 Source Message Contents

Subject:  [security bulletin] HPSBTU02311 SSRT080001 rev.1 - HP Tru64 UNIX running Perl, Remote Execution of Arbitrary Code


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Hash: SHA1

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c01362465
Version: 1

HPSBTU02311 SSRT080001 rev.1 - HP Tru64 UNIX running Perl, Remote Execution of Arbitrary Code

NOTICE: The information in this Security Bulletin should be acted upon as soon as possible.

Release Date: 2008-02-19
Last Updated: 2008-02-19

Potential Security Impact: Execution of Arbitrary Code

Source: Hewlett-Packard Company, HP Software Security Response Team

VULNERABILITY SUMMARY
A potential security vulnerability has been identified in Perl 5.8.7 and earlier running on HP Tru64 UNIX. The vulnerability could
 be exploited remotely to execute arbitrary code.

References: CVE-2007-5116 

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
The following supported software versions are affected: 

Perl v5.8.7 and earlier as provided with...

HP Tru64 UNIX v 5.1B-4 
HP Tru64 UNIX v 5.1B-3 
Internet Express (IX) for HP Tru64 UNIX v 6.7 

BACKGROUND

CVSS 2.0 Base Metrics 

Reference          Base Vector                           Base Score 
CVE-2007-5116  (AV:N/AC:L/Au:N/C:C/I:C/A:C)  10.0
 
Information on CVSS is documented in HP Customer Notice: HPSN-2008-002. 


RESOLUTION
HP is releasing the following Early Release Patch (ERP) kits publicly for use by any customer until updates are available in mainstream
 release patch kits. 

The resolutions contained in the ERP kits are targeted for availability in the following mainstream kits: 

The Associated Products CD (APCD) associated with HP Tru64 UNIX v 5.1B-5 
Internet Express (IX) for HP Tru64 UNIX v 6.8 

The ERP kits use dupatch to install and will not install over any Customer Specific Patches (CSPs) that have file intersections with
 the ERPs. Contact your service provider for assistance if the installation of the ERPs is blocked by any of your installed CSPs.

The ERP kits distribute the following items:

Patched version of Perl v 5.8.8 including source code

HP Tru64 UNIX Version v5.1B-4 
PREREQUISITE: HP Tru64 UNIX v5.1B-4 PK6 (BL27) 
Name: perl_V51BB27-ES-20080207 
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=perl_V51BB27-ES-20080207 
 
HP Tru64 UNIX Version v5.1B-3 
PREREQUISITE: HP Tru64 UNIX v5.1B-3 PK5 (BL26) 
Name: perl_V51BB26-ES-20080204 
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001399-V51BB26-ES-20071207 
 
Internet Express (IX) for HP Tru64 UNIX v 6.7 
PREREQUISITE: HP Tru64 UNIX v5.1B-3 PK5 (BL26) or HP Tru64 UNIX v5.1B-3 PK5 (BL26) 
NOTE: Use the Perl patch kit appropriate to the operating system version 
 


MD5 checksums are available from the ITRC patch database main page. From the patch database main page, click Tru64 UNIX, then click
 verifying MD5 checksums under useful links.

PRODUCT SPECIFIC INFORMATION 

HISTORY 
Version:1 (rev.1) - 19 February 2008 Initial release 

Third Party Security Patches: Third party security patches which are to be installed on systems running HP software products should
 be applied in accordance with the customer's patch management policy. 

Support: For further information, contact normal HP Services support channel.

Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert@hp.com 
It is strongly recommended that security related information being communicated to HP be encrypted using PGP, especially exploit information.
 
To get the security-alert PGP key, please send an e-mail message as follows:
  To: security-alert@hp.com 
  Subject: get key

Subscribe: To initiate a subscription to receive future HP Security Bulletins via Email: 
http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC 
On the web page: ITRC security bulletins and patch sign-up 
Under Step1: your ITRC security bulletins and patches 
  - check ALL categories for which alerts are required and continue.
Under Step2: your ITRC operating systems 
  - verify your operating system selections are checked and save.


To update an existing subscription: http://h30046.www3.hp.com/subSignIn.php 
Log in on the web page: Subscriber's choice for Business: sign-in. 
On the web page: Subscriber's Choice: your profile summary - use Edit Profile to update appropriate sections.


To review previously published Security Bulletins visit: http://www.itrc.hp.com/service/cki/secBullArchive.do 


* The Software Product Category that this Security Bulletin relates to is represented by the 5th and 6th characters of the Bulletin
 number in the title: 

GN = HP General SW
MA = HP Management Agents
MI = Misc. 3rd Party SW
MP = HP MPE/iX
NS = HP NonStop Servers
OV = HP OpenVMS
PI = HP Printing & Imaging
ST = HP Storage SW
TL = HP Trusted Linux 
TU = HP Tru64 UNIX
UX = HP-UX
VV = HP VirtualVault
 

System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and
 enhancing the security features of software products to provide customers with current secure solutions.


"HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important
 security information contained in this Bulletin. HP recommends that all users determine the applicability of this information to
 their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete
 for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the
 information provided in this Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including
 the warranties of merchantability and fitness for a particular purpose, title and non-infringement."


Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided
 is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or
 suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating
 to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this
 document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein
 are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein
 may be trademarks of their respective owners.
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