Date: Thu, 21 Oct 2004 12:51:52 +0800
From: NSFOCUS Security Team <[email protected]>
To: [email protected]Subject: NSFOCUS SA2004-02 : HP-UX stmkfont Local Privilege Escalation Vulnerability
Cc: [email protected], [email protected]
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NSFOCUS Security Advisory(SA2004-02)
Topic: HP-UX stmkfont Local Privilege Escalation Vulnerability
Release Date: 2004-10-20
CVE CAN ID: CAN-2004-0965
http://www.nsfocus.com/english/homepage/research/0402.htm
Affected system:
- - HP-UX B.11.00
- - HP-UX B.11.11
- - HP-UX B.11.22
- - HP-UX B.11.23
Summary:
=========
NSFOCUS Security Team found a security vulnerability during an external
command execution in the program stmkfont of HP HP-UX system. Exploiting
this vulnerability local attackers could gain group 'bin' privilege.
Description:
============
HP-UX stmkfont is installed sgid 'bin' bit by default.
stmkfont uses relative path when executing some external commands, and local
attackers could cause stmkfont to call any specified external command by
setting PATH environment variable. Therefore, attackers could run arbitrary
command with the privilege of group 'bin'.
Workaround:
=============
NSFOCUS suggests to temporarily remove the sgid 'bin' bit from stmkfont:
# chmod a-s /usr/bin/stmkfont
Vendor Status:
==============
2004.10.20 Vendor released a security bulletin (HPSBUX01088) and relative
patches for the vulnerability.
Detailed information for the HP security bulletin is available at:
http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX01088
Note: Valid ITRC account is required for the link above.
Patch IDs:
PHSS_31990 - HP-UX B.11.23
PHSS_31989 - HP-UX B.11.22
PHSS_31988 - HP-UX B.11.11
PHSS_31987 - HP-UX B.11.00
Additional Information:
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2004-0965 to this issue. This is a candidate for inclusion in the
CVE list (http://cve.mitre.org), which standardizes names for security
problems. Candidates may change significantly before they become official
CVE entries.
Acknowledgment
===============
Yang Jilong of NSFOCUS Security Team found the vulnerability.
DISCLAIMS:
==========
THE INFORMATION PROVIDED IS RELEASED BY NSFOCUS "AS IS" WITHOUT WARRANTY
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INCIDENTAL,CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES,
EVEN IF NSFOCUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
DISTRIBUTION OR REPRODUCTION OF THE INFORMATION IS PROVIDED THAT THE
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Copyright 1999-2003 NSFOCUS. All Rights Reserved. Terms of use.
NSFOCUS Security Team <[email protected]>
NSFOCUS INFORMATION TECHNOLOGY CO.,LTD
(http://www.nsfocus.com)
PGP Key: http://www.nsfocus.com/homepage/research/pgpkey.asc
Key fingerprint = F8F2 F5D1 EF74 E08C 02FE 1B90 D7BF 7877 C6A6 F6DA
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