SSRT3451 Potential Security Vulnerability in HP-UX network drivers (Data Leakage)

SSRT3451 Potential Security Vulnerability in HP-UX network drivers (Data Leakage)

Post by Security Ale » Thu, 29 May 2003 07:49:15

Hash: SHA1

 Originally issued: 27 May 2003
 SSRT3451 Potential Security Vulnerability in HP-UX network
          drivers (Data Leakage)

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

The information in the following Security Bulletin should be
acted upon as soon as possible.  Hewlett-Packard Company will
not be liable for any consequences to any customer resulting
from customer's failure to fully implement instructions in this
Security Bulletin as soon as possible.

PROBLEM:  Potential for Ethernet device drivers to reuse packet
          data for padding.
          Cross-reference: CERT/cc VU#412115 and CVE CAN-2003-0001

IMPACT:   Device drivers may not pad frames with null bytes,
          potential leakage of kernel memory.

PLATFORM: HP9000 Series 700/800 runnning HP-UX releases 10.20
          and 11.00.

SOLUTION: Install appropriate device driver patches:
          for HP-UX 11.00
           PHNE_28143 s700_800 lan3 LAN product cumulative patch
           PHNE_28636 s700_800 EISA 100BT cumulative patch

          for HP-UX 10.20
           PHNE_28635 s700_800 EISA 100BT cumulative patch
           PHNE_28536 s800 LAN products cumulative patch
           PHNE_28535 s700 LAN products cumulative patch


AVAILABILITY:  All patches are available now on <>.
 A. Background
    CERT has reported that network device drivers may reuse old
    frame buffer data to pad packets resulting in an information
    leakage vulnerability that may allow remote harvesting of
    sensitive information from affected devices.

    The only HP-UX network device drivers affected are:
      btlan0  for EISA    on 10.20/11.00
      lan3    for NIO     on 10.20/11.00

      HP NonStop Servers,
      HP Tru64 UNIX/TruCluster Server,
      HP OpenVMS

 B. Recommended solution
    These patches completely solve the identified problem,
        for HP-UX 11.00
          PHNE_28143 s700_800 lan3 LAN product cumulative patch
          PHNE_28636 s700_800 EISA 100BT cumulative patch

        for HP-UX 10.20
          PHNE_28635 s700_800 EISA 100BT cumulative patch
          PHNE_28536 s800 LAN products cumulative patch
          PHNE_28535 s700 LAN products cumulative patch

    To identify if your system uses the affected drivers, as
    root run ioscan to list all reportable hardware:
    #/sbin/ioscan -fkClan
 Class  I  H/W Path  Driver  S/W State H/W Type  Description
 lan    1  8/20/5/1  btlan0  CLAIMED  INTERFACE  EISA card

    # ioscan -fkClan
 Class  I  H/W Path  Driver  S/W State H/W Type  Description
 lan    0  56.1      lan3    CLAIMED  INTERFACE

    NOTE: A reboot will be required after installation of
          these patches.

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(c)Copyright 2003 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
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Version: PGP 8.0


Yours truly,
HP S/W Security Team
WTEC Cupertino, California