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- ===========================================================================
- CA-91:09 CERT Advisory
- July 15, 1991
- Patch for SunOS /usr/etc/rpc.mountd
-
- ---------------------------------------------------------------------------
-
- The Computer Emergency Response Team/Coordination Center (CERT/CC) has
- received information concerning the availability of a security patch
- for /usr/etc/rpc.mountd in Sun Microsystems, Inc. operating systems.
- This problem will be fixed in SunOS 5.0. Patches are available for
- SunOS 4.1, and SunOS 4.1.1 through your local Sun answer centers
- worldwide as well as through anonymous ftp to ftp.uu.net (in ~ftp/sun-dist).
- Patch ID and file information are as follows:
-
- Fix Patch ID Filename Checksum
- /usr/etc/rpc.mountd 100296-01 100296-01.tar.Z 01501 233
-
- Please note that Sun Microsystems sometimes updates patch files. If
- you find that the checksum is different please contact Sun Microsystems
- or us for verification.
- ---------------------------------------------------------------------------
-
- I. DESCRIPTION:
-
- If an access list of hosts within /etc/exports is a string
- over 256 characters then the filesystem can be mounted by
- everyone.
-
- II. IMPACT:
-
- Unauthorized remote hosts will be able to mount the filesystem.
-
- III. SOLUTION:
-
- As root:
-
- 1. Move the existing rpc.mountd aside
-
- # mv /usr/etc/rpc.mountd /usr/etc/rpc.mountd.OLD
-
- 2. Install the new version
-
- # cp sun{3,3x,4,4c}/{4.1,4.1.1,4.1_PSR_A}/rpc.mountd /usr/etc
- # chown root.staff /usr/etc/rpc.mountd
- # chmod 755 /usr/etc/rpc.mountd
-
- 3. Kill the currently running rpc.mountd and restart it, or,
- reboot the system. Systems currently mounting filesystems
- from this host will have interruptions in service either
- way.
-
- ---------------------------------------------------------------------------
-
- If you believe that your system has been compromised, contact CERT/CC via
- telephone or e-mail.
-
- Computer Emergency Response Team/Coordination Center (CERT/CC)
- Software Engineering Institute
- Carnegie Mellon University
- Pittsburgh, PA 15213-3890
-
- Internet E-mail: cert@cert.sei.cmu.edu
- Telephone: 412-268-7090 24-hour hotline:
- CERT/CC personnel answer 7:30a.m.-6:00p.m. EST,
- on call for emergencies during other hours.
-
- Past advisories and other computer security related information are available
- for anonymous ftp from the cert.sei.cmu.edu (192.88.209.5) system.
-