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SCO Security Advisory

Subject: UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : remote buffer overflow in sendmail (CERT CA-2003-07)
Advisory number: CSSA-2003-SCO.5
Issue date: 2003 March 07
Cross reference:
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1. Problem Description

From CA-2003-07: Researchers at Internet Security Systems
(ISS) have discovered a remotely exploitable vulnerability
in sendmail. This vulnerability could allow an intruder to
gain control of a vulnerable sendmail server.

2. Vulnerable Supported Versions

System Binaries
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UnixWare 7.1.1 /usr/lib/sendmail
Open UNIX 8.0.0 /usr/lib/sendmail
UnixWare 7.1.3 /usr/lib/sendmail

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.5

4.2 Verification

MD5 (ptf7130e.pkg.Z) = b1288b52f180c9642e03166d1575de75

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 ptf7130e.pkg.Z to the /var/spool/pkg directory

# uncompress /var/spool/pkg/ptf7130e.pkg.Z
# pkgadd -d /var/spool/pkg/ptf7130e.pkg

5. Open UNIX 8.0.0

5.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.5

5.2 Verification

MD5 (erg712247.pkg.Z) = d77109c8836142c5327ed1fc5f82e252

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 erg712247.pkg.Z to the /var/spool/pkg directory

# uncompress /var/spool/pkg/erg712247.pkg.Z
# pkgadd -d /var/spool/pkg/erg712247.pkg

6. UnixWare 7.1.3

6.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.5

6.2 Verification

MD5 (erg712247.pkg.Z) = d77109c8836142c5327ed1fc5f82e252

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 erg712247.pkg.Z to the /var/spool/pkg directory

# uncompress /var/spool/pkg/erg712247.pkg.Z
# pkgadd -d /var/spool/pkg/erg712247.pkg

7. References

Specific references for this advisory:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1337
http://www.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=21950
http://www.cert.org/advisories/CA-2003-07.html
http://www.kb.cert.org/vuls/id/398025
http://www.sendmail.org/8.12.8.html

SCO security resources:

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

This security fix closes SCO incidents sr875284, fz527484,
erg712247.

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.

9. Acknowledgements

Internet Security Systems, Inc. discovered and researched
this vulnerability.

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