Sun Solaris /usr/lib/utmp_update command buffer overflow

solaris-utmp-update-bo (11083) The risk level is classified as HighHigh Risk

Description:

Sun Solaris is vulnerable to a buffer overflow in the /usr/lib/utmp_update command. By passing malformed input to the utmp_update command, a local attacker could overflow a buffer and gain root privileges on the system.


Consequences:

Gain Privileges

Remedy:

Apply the appropriate patch for your system, as listed below. Refer to Sun Alert ID: 55260 for more information. See References.

SPARC:
Solaris 2.6: 113754-02 or later
Solaris 7: 113752-02 or later
Solaris 8: 113650-02 or later
Solaris 9: 113718-02 or later

x86:
Solaris 2.6: 113755-02 or later
Solaris 7: 113753-02 or later
Solaris 8: 113651-02 or later
Solaris 9: 113996-02 or later

References:

  • CIAC Information Bulletin N-105: Sun "/usr/lib/utmp_update" Command Buffer Overflow Vulnerability.
  • Sun Alert ID: 50008: Security Vulnerability with the Solaris /usr/lib/utmp_update Command.
  • Sun Alert ID: 55260: A Security Vulnerability With The "/usr/lib/utmp_update" Command May Allow Local Unauthorized Privileges.
  • BID-6639: Sun Solaris UTMP_Update Local Buffer Overflow Vulnerability
  • BID-7835: Sun Solaris UTMP_Update Buffer Overflow Vulnerability
  • CVE-2003-1068: Buffer overflow in utmp_update for Solaris 2.6 through 9 allows local users to gain root privileges, as identified by Sun BugID 4659277, a different vulnerability than CVE-2003-1082.
  • CVE-2003-1082: Buffer overflow in utmp_update for Solaris 2.6 through 9 allows local users to gain root privileges, as identified by Sun BugID 4705891, a different vulnerability than CVE-2003-1068.
  • SA7892: Solaris utmp_update Buffer Overflow Vulnerability
  • SA8957: Sun Solaris "utmp_update" Privilege Escalation Vulnerability
  • SECTRACK ID: 1005935: Sun Solaris Operating System /usr/lib/utmp_update Buffer Overflow May Give Local Users Root Privileges
  • US-CERT VU#596748: Sun Solaris /usr/lib/utmp_update contains buffer overflow

Platforms Affected:

  • Sun Solaris 2.6
  • Sun Solaris 7.0
  • Sun Solaris 8
  • Sun Solaris 9

Reported:

Jan 16, 2003

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