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SCO Security Advisory

Subject: UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : Lax permissions on /dev/X
Advisory number: CSSA-2003-SCO.4
Issue date: 2003 March 04
Cross reference:
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1. Problem Description

The /dev/X directory is world readable and writable, and
the files in it are also world readable and writable.
Denial-of-Service attacks are possible, as well as possible
data hijacking. The X server sets these permissions when
it starts up, so there is no workaround for this issue.

2. Vulnerable Supported Versions

System Binaries
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UnixWare 7.1.1 Standard X Distribution
Open UNIX 8.0.0 Standard X Distribution
UnixWare 7.1.3 Standard X Distribution

3. Solution

The proper solution is to install the latest packages.

4. UnixWare 7.1.1

4.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.4

4.2 Verification

MD5 (basex.pkg.Z) = 510888d562f6c2249555fefdae94d49d
MD5 (xserver.pkg.Z) = 74797f12d6e3e80300980854050f62ef

md5 is available for download from
ftp://ftp.sco.com/pub/security/tools

4.3 Installing Fixed Binaries

Upgrade the affected binaries with the following sequence:

Download basex.pkg.Z to the /var/spool/pkg directory

# uncompress /var/spool/pkg/basex.pkg.Z
# pkgadd -d /var/spool/pkg/basex.pkg

# uncompress /var/spool/pkg/xserver.pkg.Z
# pkgadd -d /var/spool/pkg/xserver.pkg

5. Open UNIX 8.0.0

5.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.4

5.2 Verification

MD5 (basex.pkg.Z) = 510888d562f6c2249555fefdae94d49d
MD5 (xserver.pkg.Z) = 74797f12d6e3e80300980854050f62ef

md5 is available for download from
ftp://ftp.sco.com/pub/security/tools

5.3 Installing Fixed Binaries

Upgrade the affected binaries with the following sequence:

Download basex.pkg.Z to the /var/spool/pkg directory

# uncompress /var/spool/pkg/basex.pkg.Z
# pkgadd -d /var/spool/pkg/basex.pkg

# uncompress /var/spool/pkg/xserver.pkg.Z
# pkgadd -d /var/spool/pkg/xserver.pkg

6. UnixWare 7.1.3

6.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.4

6.2 Verification

MD5 (basex.pkg.Z) = 510888d562f6c2249555fefdae94d49d
MD5 (xserver.pkg.Z) = 74797f12d6e3e80300980854050f62ef

md5 is available for download from
ftp://ftp.sco.com/pub/security/tools

6.3 Installing Fixed Binaries

Upgrade the affected binaries with the following sequence:

Download basex.pkg.Z to the /var/spool/pkg directory

# uncompress /var/spool/pkg/basex.pkg.Z
# pkgadd -d /var/spool/pkg/basex.pkg

# uncompress /var/spool/pkg/xserver.pkg.Z
# pkgadd -d /var/spool/pkg/xserver.pkg

7. References

Specific references for this advisory:

none

SCO security resources:

http://www.sco.com/support/security/index.html

This security fix closes SCO incidents sr874992, sr874607,
fz527440, erg712231.

8. Disclaimer

SCO is not responsible for the misuse of any of the information
we provide on this website and/or through our security
advisories. Our advisories are a service to our customers
intended to promote secure installation and use of SCO
products.

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