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Category:   Application (Generic)  >   libc Vendors:   HPE
(HP Issues Fix for HP-UX) Various libc Implementations Have a Denial of Service Bug That Lets Remote Users Crash Affected RPC Services
SecurityTracker Alert ID:  1009971
SecurityTracker URL:  http://securitytracker.com/id/1009971
CVE Reference:   CVE-2002-1265   (Links to External Site)
Date:  Apr 28 2004
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): GNU glibc 2.3.1; Mac OS X 10.0 - 10.2.1; other applications and operating systems are also affected
Description:   A denial of service vulnerability was reported in several libc implementations. A remote user could cause an affected RPC-based service to crash.

CERT reported a vulnerability in several vendor libc implementations that are based on Sun's RPC libc library. According to the report, the code does not properly read certain data from TCP connections. A remote user can connect to the service to cause the listening server daemon to crash.

No further details were provided.

According to the report, GNU glibc version 2.3.1 and previous releases are vulnerable. Mac OS X 10.0 to 10.2.1 & Mac OS X Server 10.0 to 10.2.1 are also reported to be vulnerable.

Impact:   A remote user can connect to an RPC-based service based on the affected libc code and cause the service to crash.
Solution:   HP has issued the following patches:

B.11.23 - PHNE_30090 or subsequent
B.11.23 - PHNE_30091 or subsequent
B.11.23 - PHNE_30092 or subsequent
B.11.23 - PHNE_30093 or subsequent
B.11.23 - PHNE_30094 or subsequent

B.11.22 - PHNE_29449 or subsequent

B.11.11 - PHNE_29211 or subsequent

B.11.00 - PHNE_29210 or subsequent

Vendor URL:  www2.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX01020 (Links to External Site)
Cause:   Exception handling error
Underlying OS:  UNIX (HP/UX)
Underlying OS Comments:  HP-UX B.11.00, B.11.11, B.11.22, B.11.23

Message History:   This archive entry is a follow-up to the message listed below.
Nov 4 2002 Various libc Implementations Have a Denial of Service Bug That Lets Remote Users Crash Affected RPC Services



 Source Message Contents

Subject:  http://www2.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX01020


http://www2.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX01020

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

HP SECURITY BULLETIN


HPSBUX01020     REVISION: 0

SSRT2384 rev.0 HP-UX RPC remote denial of service


  -----------------------------------------------------------------
NOTICE:
  There are no restrictions for distribution of this Bulletin
  provided that it remains complete and intact.

  The information in this Security bulletin should be acted upon
  as soon as possible.

INITIAL RELEASE:    27 April 2004



POTENTIAL SECURITY IMPACT:    remote denial of service

SOURCE:    HEWLETT-PACKARD COMPANY
HP Software Security Response Team

REFERENCES:    CERT VU#266817

VULNERABILITY SUMMARY:
A potential security vulnerability has been identified with HP-UX
running RPC services, where the vulnerability may be exploited by
an unauthorized remote user to create a denial of service (DoS).

SUPPORTED SOFTWARE VERSIONS*:  ONLY impacted versions are listed.
HP-UX B.11.00, B.11.11, B.11.22, B.11.23.

BACKGROUND:
The patches listed below provide the non-blocking I/O
functionality of  ONC 2.3 in ONC  1.2.  For this feature to be
enabled an application must use either rpc_control() or
svc_control().  New macros have been added for these API's to
allow  applications to work in non-blocking mode.   The patches
deliver RPC daemons which have been recompiled to enable the
non-blocking I/O functionality.


      AFFECTED VERSIONS

      Note: To determine if a system has an affected version,
            search the output of "swlist -a revision -l fileset"
            for an affected fileset.  Then determine if the
            recommended patch or update is installed.


      HP-UX B.11.23
      =============

      NFS.NFS-SHLIBS
      action: install PHNE_30090 or subsequent

      NFS.NIS2-CLIENT
      NFS.NIS2-SERVER
      NFS.NISPLUS2-CORE
      action: install PHNE_30091 or subsequent

      NFS.KEY-CORE
      NFS.NFS2-CORE
      NFS.NFS2-SERVER
      action: install PHNE_30092 or subsequent

      NFS.NFS2-CORE
      action: install PHNE_30093 or subsequent

      NFS.NFS2-SERVER
      action: install PHNE_30094 or subsequent

      HP-UX B.11.22
      =============

      NFS.NFS-PRG
      NFS.NIS-SERVER
      NFS.KEY-CORE
      NFS.NFS-KRN
      NFS.NFS-SHLIBS
      NFS.NFS2-CLIENT
      NFS.NFS2-CORE
      NFS.NFS2-SERVER
      NFS.NIS2-CLIENT
      NFS.NIS2-CORE
      NFS.NIS2-SERVER
      NFS.NISPLUS2-CORE

      action: install PHNE_29449 or subsequent

      HP-UX B.11.11
      =============

      NFS.KEY-CORE
      NFS.NFS-CLIENT
      NFS.NFS-CORE
      NFS.NFS-PRG
      NFS.NFS-SERVER
      NFS.NFS-SHLIBS
      NFS.NIS-CLIENT
      NFS.NIS-CORE
      NFS.NIS-SERVER
      NFS.NISPLUS-CORE
      NFS.NFS-KRN

      action: install PHNE_29211 or subsequent

      HP-UX B.11.00
      =============


      OS-Core.CORE2-KRN
      NFS.NFS-KRN
      NFS.NFS-CLIENT
      NFS.NFS-PRG
      NFS.KEY-CORE
      NFS.NISPLUS-CORE
      NFS.NFS-SERVER
      NFS.NFS-SHLIBS
      NFS.NIS-CORE
      NFS.NIS-CLIENT
      NFS.NIS-SERVER
      InternetSrvcs.INETSVCS-INETD

      action: install PHNE_29210 or subsequent


      END AFFECTED VERSIONS

RESOLUTION:
HP has released the following patches to resolve the issue:

      B.11.23 - PHNE_30090 or subsequent
      B.11.23 - PHNE_30091 or subsequent
      B.11.23 - PHNE_30092 or subsequent
      B.11.23 - PHNE_30093 or subsequent
      B.11.23 - PHNE_30094 or subsequent

      B.11.22 - PHNE_29449 or subsequent

      B.11.11 - PHNE_29211 or subsequent

      B.11.00 - PHNE_29210 or subsequent


Please write to security-alert@hp.com to request a PGP signed
version of this bulletin.

MANUAL ACTIONS:  No



* The software product category that this Security Bulletin
  relates to is represented by the 5th and 6th characters of the
  Bulletin number: GN=General, MA=Management Agents, MI=Misc.
  3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers, OV=HP OpenVMS,
  PI=HP Printing & Imaging, ST=HP Storage, TU=HP Tru64 UNIX,
  TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault


SUPPORT: For further information, contact HP Services support
          channel.

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:
Driver and Support Alerts/Notifications Sign-up: Product Selection
Under Step1: your products
1. Select product category:
    - a minimum of servers must be selected.
2. Select product family or search:
    - a minimum of one product must be selected.
3. Add a product:
    - a minimum of one product must be added.
In Step 2: your operating system(s)
    - check ALL operating systems for which alerts are required.
Complete the form 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.

Note: In addition to the individual alerts/notifications for the
selected operating systems/products, subscribers will
automatically receive one copy of alerts for non-operating system
categories (i.e., a subscriber who signs up for all six operating
system alerts will only receive one copy of all the non-operating
system alerts).

HP-UX SPECIFIC SECURITY BULLETINS*:
To review previously published Security Bulletins for HP-UX:
  http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin

The HP-UX Security Patch Matrix is available here:
http://itrc.hp.com/service/cki/docDisplay.do?docId=
hpuxSecurityMatrix
Or via anonymous ftp:
ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/

The HP-UX Security Patch Matrix, updated daily, categorizes
security patches by platform/OS release, and by Bulletin topic.
The Security Patch Check tool completely automates the process of
reviewing the Security Patch Matrix for HP-UX 11.XX Versions.
NOTE: Installing patches listed in the Security Patch Matrix will
completely implement the RESOLUTION in the Security Bulletin
_only_ if there are no MANUAL ACTIONS included.

The Security Patch Check tool can also verify that a Security
Bulletin RESOLUTION has been implemented on HP-UX 11.XX Versions
provided that no MANUAL ACTIONS were included. The Security Patch
Check tool cannot verify patches implemented via product upgrade.

For information on the Security Patch Check tool, see:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA

REPORT: To report a potential security vulnerability with any HP
supported product, send email to: security-alert@hp.com

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."


(c)Copyright 2004 Hewlett-Packard Development Company, L.P.
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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