[UNIX] HP Tru64 UNIX Running the ps command, Local Disclosure of Sensitive Information

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HP Tru64 UNIX Running the ps command, Local Disclosure of Sensitive
Information
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SUMMARY

A potential security vulnerability has been identified with the HP Tru64
UNIX Operating System running the ps command. The ps command could be used
to disclose information about a process's arguments and environmental
variables that might be exploited by a local, authorized user.

DETAILS

Vulnerable Systems:
* HP Tru64 UNIX v5.1B-4
* HP Tru64 UNIX v5.1B-3
* HP Tru64 UNIX v5.1A PK6
* HP Tru64 UNIX v4.0G PK4
* HP Tru64 UNIX v4.0F PK8

HP has released the following Early Release Patch kits (ERPs) publicly for
use by any customer.

The ERP kits use dupatch to install and will not install over any Customer
Specific Patches (CSPs) that have file intersections with the ERP.

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

HP Tru64 UNIX Version v5.1B-5

The ERP kits distribute the following files:

/usr/bin/ps
/sbin/ps

After installing the patch kit, by default, the HP Tru64 UNIX ps command
behaves just the same: it can display a process's arguments, and the ps e
command displays a process's environmental variables.
To prevent users from seeing the arguments and environmental variables of
other users, set new variables in the "/etc/rc.config.common" file
(versions v5.1A PK6, v5.1B-3, v5.2B-4) or the "/etc/rc.config" file
(versions v4.0G PK4 and v4.0F PK8) as follows:

For HP Tru64 UNIX versions v5.1B-4, v5.1B-3 and v5.1A PK6, use:
# rcmgr -c set TBL_ARGUMENTS_DISABLE 1
# rcmgr -c set TBL_ENVIRONMENT_DISABLE 1

For HP Tru64 UNIX versions v4.0G PK4 and v4.0F PK8, use:
# rcmgr set TBL_ARGUMENTS_DISABLE 1
# rcmgr set TBL_ENVIRONMENT_DISABLE 1

Setting the new variables to prevent the ps command from allowing non-root
users to display other users arguments and environment variables might
cause some applications or program scripts to not function properly.
The root user running the ps command will continue to be allowed to
display other users arguments and environment variables.

HP Tru64 UNIX Version v5.1B-4 ERP Kit:
Location:
<http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001143-V51BB27-ES-20070305> http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001143-V51BB27-ES-20070305
Name: T64KIT1001143-V51BB27-ES-20070305
MD5 Checksum: 44b15d10895cf0606003a572b3310f9a

HP Tru64 UNIX Version v5.1B-3 ERP Kit:
Location:
<http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001144-V51BB26-ES-20070305 > http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001144-V51BB26-ES-20070305
Name: T64KIT1001144-V51BB26-ES-20070305
MD5 Checksum: 67cfabb7cd3c422e2dc6bb6ed3d7d290

HP Tru64 UNIX Version v5.1A PK6 ERP Kit:
Location:
<http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001145-V51AB24-ES-20070305 > http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001145-V51AB24-ES-20070305
Name: T64KIT1001145-V51AB24-ES-20070305
MD5 Checksum: de6885b166dba703af862ce05431e5cc

HP Tru64 UNIX Version v4.0G PK4 ERP Kit:
Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001179-V40GB22-ES-20070330
Name: T64KIT1001179-V40GB22-ES-20070330
MD5 Checksum: 31129e60bb01ffdea015312c0e019fae

HP Tru64 UNIX Version v4.0F PK8 ERP Kit:
Location:
<http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=DUXKIT1001180-V40FB22-ES-20070330 > http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=DUXKIT1001180-V40FB22-ES-20070330
Name: DUXKIT1001180-V40FB22-ES-20070330
MD5 Checksum: db9d634bb27f02642e00f149d6ebb8ee


ADDITIONAL INFORMATION

The information has been provided by HP Software Security Response Team.



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