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SCO Security Bulletin 99.13
2nd September 1999
Security vulnerability in the passthru drive
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I.   Description

A security vulnerability has been found in the passthru driver.

II.  Impact

This patch fixes issues with the passthru driver that could lead
to possible denial of service attacks.

III. Releases

This patch is for UnixWare 7.1.0 only.

IV.  Solution

SCO is providing an interim patch to address this issue in the form of a
System Security Enhancement (SSE) package.

SSE031 contains replacement binaries for each system type, and is
available for Internet download via anonymous ftp, and from the SCOFORUM
on Compuserve.

You can download the SSE package as follows:

Anonymous ftp (World Wide Web URL):

    ftp://ftp.sco.COM/SSE/sse031.ltr    (cover letter, ASCII text)
    ftp://ftp.sco.COM/SSE/sse031.tar    (new binaries, tar file)

Compuserve:

    GO SCOFORUM, and search Library 11 (SLS/SSE Files) for these filenames:

	SSE031.LTR	(cover letter, ASCII text)
	SSE031.TAZ	(new binaries, tar file)

Checksums (sum -r):

	61329     4 sse031.ltr
	39359    80 sse031.tar

V.   Updates

This bulletin is available for anonymous ftp download from 
ftp://ftp.sco.COM/SSE/security_bulletins/SB-99.13a, and will be
updated as new information becomes available.

The latest information on security vulnerabilities and fixes from
SCO is available on the world-wide web at http://www.sco.com/security/

VI.  Further Information:

If you have further questions, contact your support provider.  If you
need to contact SCO, please send electronic mail to support@sco.COM, or
contact SCO as follows. 

    USA/Canada: 6am-5pm Pacific Time (PST/PDT)
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    1-800-347-4381  (voice)
    1-408-427-5443  (fax)

    Pacific Rim, Asia, and Latin American customers: 6am-5pm Pacific
    ------------------------------------------------ Time (PST/PDT)
    1-408-425-4726  (voice)
    1-408-427-5443  (fax)

    Europe, Middle East, Africa: 9am-5:30pm UK Time (GMT/BST)
    ----------------------------
    +44 (0)1923 816344 (voice)
    +44 (0)1923 817781 (fax)