ps tmpfile race
| sol-pstmprace (420) |  High Risk |
Description:
The tmpfs feature feature in Solaris could allow a local attacker to gain elevated privileges, caused by the use of unused swap space as a /tmp directory. A local attacker could exploit this vulnerability to delete files from this directory and gain root privileges.
Platforms Affected:
- Sun, Solaris 1.0
- Sun, Solaris 2.3
- Sun, Solaris 2.4 x86
Remedy:
This vulnerability has been fixed in Solaris 2.5 and newer; users of older Solaris installations should obtain and apply the following patches:
- Solaris 2.3: 101545-02
- Solaris 2.4: 102711-01
- Solaris 2.4_x86: 102712-01
Consequences:
Gain Privileges
References:
- AusCERT Advisory AA-95.07, Incorrect permissions on /tmp may allow root access at ftp://ftp.auscert.org.au/pub/auscert/advisory/AA-95.07.Incorrect.Permissions.on.tmp.may.allow.root.access.
- CERT Advisory CA-1995-09, Solaris ps Vulnerability at http://www.cert.org/advisories/CA-1995-09.html.
- Sun Microsystems, Inc. Security Bulletin #00131, ps_data at http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/131&type=0&nav=sec.sba.
- CVE-1999-0164: A race condition in the Solaris ps command allows an attacker to overwrite critical files.
- OSVDB ID: 8346: Solaris ps Command Symlink Arbitrary File Overwrite
Reported:
Aug 14, 1995
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