Sun Solaris 'dircmp(1)' Insecure Temporary File Creation Vulnerability

Bugtraq ID:	34316
Class:	Design Error
CVE:
Remote:	No
Local:	Yes
Published:	Mar 31 2009 12:00AM
Updated:	Apr 20 2009 10:46PM
Credit:	River Tarnell of the Wikimedia Foundation
Vulnerable:	Sun Solaris 9_x86 Sun Solaris 9 Sun Solaris 8_x86 Sun Solaris 8_sparc Sun Solaris 10.0_x86 Sun Solaris 10.0 Sun OpenSolaris build snv_99 Sun OpenSolaris build snv_96 Sun OpenSolaris build snv_95 Sun OpenSolaris build snv_94 Sun OpenSolaris build snv_93 Sun OpenSolaris build snv_92 Sun OpenSolaris build snv_91 Sun OpenSolaris build snv_90 Sun OpenSolaris build snv_89 Sun OpenSolaris build snv_88 Sun OpenSolaris build snv_87 Sun OpenSolaris build snv_86 Sun OpenSolaris build snv_85 Sun OpenSolaris build snv_84 Sun OpenSolaris build snv_83 Sun OpenSolaris build snv_82 Sun OpenSolaris build snv_81 Sun OpenSolaris build snv_80 Sun OpenSolaris build snv_78 Sun OpenSolaris build snv_77 Sun OpenSolaris build snv_76 Sun OpenSolaris build snv_68 Sun OpenSolaris build snv_67 Sun OpenSolaris build snv_64 Sun OpenSolaris build snv_61 Sun OpenSolaris build snv_59 Sun OpenSolaris build snv_57 Sun OpenSolaris build snv_50 Sun OpenSolaris build snv_47 Sun OpenSolaris build snv_45 Sun OpenSolaris build snv_39 Sun OpenSolaris build snv_36 Sun OpenSolaris build snv_29 Sun OpenSolaris build snv_22 Sun OpenSolaris build snv_19 Sun OpenSolaris build snv_13 Sun OpenSolaris build snv_111 Sun OpenSolaris build snv_110 Sun OpenSolaris build snv_109 Sun OpenSolaris build snv_108 Sun OpenSolaris build snv_107 Sun OpenSolaris build snv_106 Sun OpenSolaris build snv_105 Sun OpenSolaris build snv_104 Sun OpenSolaris build snv_104 Sun OpenSolaris build snv_103 Sun OpenSolaris build snv_102 Sun OpenSolaris build snv_101a Sun OpenSolaris build snv_101 Sun OpenSolaris build snv_100 Sun OpenSolaris build snv_02 Sun OpenSolaris build snv_01 Avaya Interactive Response 4.0 Avaya Interactive Response 3.0 Avaya CMS Server 13.0 Avaya CMS Server 15.0 Avaya CMS Server 14.1 Avaya CMS Server 14.0 Avaya CMS Server 13.1
Not Vulnerable:	Sun OpenSolaris build snv_112

Sun Solaris 'dircmp(1)' Insecure Temporary File Creation Vulnerability

Sun Solaris creates temporary files in an insecure manner.

An attacker with local access could potentially exploit this issue to perform symbolic-link attacks, overwriting arbitrary files in the context of the affected software.

Successfully mounting a symlink attack may allow the attacker to delete or corrupt sensitive files, which may result in privilege escalation or a denial of service. Other attacks may also be possible.

Sun Solaris 'dircmp(1)' Insecure Temporary File Creation Vulnerability

An attacker uses readily available commands to exploit this issue.

Sun Solaris 'dircmp(1)' Insecure Temporary File Creation Vulnerability

Solution:
The vendor has released an update. Please see the references for more information.


Sun Solaris 10_x86

• Sun 141015-01
  http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21 -141015-01-1

Sun Solaris 8_sparc

• Sun 140837-01
  http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21 -140837-01-1

Sun Solaris 9_x86

• Sun 138897-01
  http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21 -138897-01-1

Sun Solaris 8_x86

• Sun 140838-01
  http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21 -140838-01-1

Sun Solaris 'dircmp(1)' Insecure Temporary File Creation Vulnerability

References:

• A Security Vulnerability in the Solaris dircmp(1) Shell Script may Allow Overwr (Sun Microsystems)
  
• Sun Solaris Home Page (Sun Microsystems)
  
• ASA-2009-140 A Security Vulnerability in the Solaris dircmp(1) Shell Script may (Avaya)