IBM AIX sadc and timex symlink attack
| aix-sadc-timex (7675) |  Medium Risk |
Description:
Sadc in AIX is setgid adm, allowing local attackers to create and modify files owned by the adm group. An attacker can use a program such as timex to supply sadc with a file name and trick sadc into modifying files.
Platforms Affected:
- IBM, AIX 4.1
- IBM, AIX 4.2
- IBM, AIX 4.3
Remedy:
For IBM AIX 4.1:
Apply IX76330 patch, available from the IBM AIX APAR IX76330 document. See References.
For IBM AIX 4.2:
Apply IX76853 patch, available from the IBM AIX APAR IX76853 document. See References.
For IBM AIX 4.3:
Apply IX75554 patch, available from the IBM AIX APAR IX75554 APAR Notes. See References.
Consequences:
File Manipulation
References:
- IBM AIX APAR IX75554 APAR Notes, IX75554 - (AIXV43 only) SECURITY: timex creates insecure temporary file at http://techsupport.services.ibm.com/cgi-bin/support/rs6000.support/fdget?fixdb=aix4&srchtype=apar&hits-menu=IX75554+-+%28AIXV43+only%29+SECURITY%3A+timex+creates+insecure+temporary+file&aix_level=AIX+4.3.0&select_site=us&select_lang=ALL.
- IBM AIX APAR IX75554 APAR Notes, (AIXV43 only) SECURITY: timex creates insecure temporary file at http://techsupport.services.ibm.com/aix/fixes/v4/os/bos.acct.4.3.1.0.info.
- IBM AIX APAR IX76330 APAR Notes, IX76330 - (AIXV41 only) timex creates insecure temporary files at http://techsupport.services.ibm.com/cgi-bin/support/rs6000.support/fdget?fixdb=aix4&srchtype=apar&hits-menu=IX76330+-+%28AIXV41+only%29+timex+creates+insecure+temporary+files&aix_level=AIX+4.2.0&select_site=us&select_lang=ALL.
- IBM AIX APAR IX76853 APAR Notes, IX76853 - (AIXV42 only) timex creates insecure temporary files at http://techsupport.services.ibm.com/cgi-bin/support/rs6000.support/fdget?fixdb=aix4&srchtype=apar&hits-menu=IX76853+-+%28AIXV42+only%29+timex+creates+insecure+temporary+files&aix_level=AIX+4.2.0&select_site=us&select_lang=ALL.
- BID-408: AIX sadc Insecure Temporary File Creation Vulnerability
- CVE-1999-1486: sadc in IBM AIX 4.1 through 4.3, when called from programs such as timex that are setgid adm, allows local users to overwrite arbitrary files via a symlink attack.
Reported:
Not available
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