Caldera OpenServer sendmail buffer overflow
| sco-openserver-sendmail-bo (6303) |  High Risk |
Description:
SCO OpenServer is vulnerable to a buffer overflow caused by a vulnerability in the sendmail program, which is installed with the MMDF (Multi-channel Memo Distribution Facility) package. The sendmail program fails to properly handle command line arguments. By using command line arguments and sending a string containing 3000 characters or more, an attacker can overflow the buffer and execute arbitrary code on the system with MMDF subsystem privileges.
Platforms Affected:
- SCO, SCO OpenServer 5.0.6
Remedy:
Apply the appropriate patch for your system, as listed in SCO System Security Enhancement (SSE) SSE072B 11-Apr-2001. See References.
As a workaround, chmod -s /opt/K/SCO/MMDF/2.43.3b/usr/lib/sendmail.
Consequences:
Gain Privileges
References:
- SCO System Security Enhancement (SSE) SSE072C 30-Aug-2001, SSE072C at ftp://ftp.sco.com/pub/SSE/sse072c/.
- Strategic Reconnaissance Team Security Advisory SRT2001-01, SCO 5.0.6 MMDF issues (sendmail 8.9.3) at http://marc.theaimsgroup.com/?l=bugtraq&m=98576095521415&w=2.
- BID-2593: SCO OpenServer sendmail Buffer Overflow Vulnerability
- CVE-2001-0588: sendmail 8.9.3, as included with the MMDF 2.43.3b package in SCO OpenServer 5.0.6, can allow a local attacker to gain additional privileges via a buffer overflow in the first argument to the command.
Reported:
Mar 27, 2001
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