OSF/1 (Tru64) inc MH environment variable buffer overflow
| osf1-inc-mh-bo (10147) |  High Risk |
Description:
OSF/1 (now Hewlett-Packard Tru64 UNIX) is vulnerable to a buffer overflow in the inc mail utility. By inserting an overly long string in the MH environment variable before passing it to the inc utility, a local attacker could overflow a buffer and execute arbitrary commands on the system with root privileges.
Platforms Affected:
- Digital, OSF/1 3.0
- Digital, OSF/1 3.0b
- Digital, OSF/1 3.2
- Digital, OSF/1 3.2b
- Digital, OSF/1 3.2c
- Digital, OSF/1 3.2d
- Digital, OSF/1 3.2de1
- Digital, OSF/1 3.2de2
- Digital, OSF/1 3.2f
- Digital, OSF/1 3.2g
- Digital, OSF/1 4.0
- Digital, Ultrix 3.0
Remedy:
Upgrade to the latest version of HP Tru64 Unix (5.1a or later), available from the Hewlett-Packard Web site. See References.
As a workaround, chmod u-s /path.to/inc.
Consequences:
Gain Privileges
References:
- iDEFENSE Security Advisory 09.18.2002, Security Vulnerabilities in OSF1/Tru64 3. at http://archives.neohapsis.com/archives/bugtraq/2002-09/0218.html. (From Neohapsis archive)
- Tru64 UNIX Web site, Tru64 UNIX Software at http://www.tru64unix.compaq.com/.
- BID-5747: HP Tru64 Inc Local Buffer Overflow Vulnerability
- CVE-2002-1128: Buffer overflow in inc mail utility for Compaq Tru64/OSF1 3.x allows local users to execute arbitrary code via a long MH environment variable.
Reported:
Sep 18, 2002
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