Security Update: [CSSA-2003-SCO.3] UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : ftp vulnerability with pipe symbols in filenames

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[email protected]

                    SCO Security Advisory

Subject: UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : ftp vulnerability
with pipe symbols in filenames
Advisory number: CSSA-2003-SCO.3
Issue date: 2003 March 03
Cross reference:

1. Problem Description

    By using a filename with a | (pipe symbol) in it, shell
    commands can be issued remotely on the machine of a user
    who is retrieving files with the FTP client program, from
    a compromised or malicious ftp server. This leads to a
    compromise of the client machine.
   

2. Vulnerable Supported Versions

    System                          Binaries
    ----------------------------------------------------------------------
    UnixWare 7.1.1                  /usr/bin/ftp
    Open UNIX 8.0.0                 /usr/bin/ftp
    UnixWare 7.1.3                  /usr/bin/ftp
   

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.3
   
   
    4.2 Verification
   
    MD5 (erg712227.pkg.Z) = 296bbcf1394f7010397b8d90f9a9978d
   
    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 erg712227.pkg.Z to the /var/spool/pkg directory
   
    # uncompress /var/spool/pkg/erg712227.pkg.Z
    # pkgadd -d /var/spool/pkg/erg712227.pkg
   

5. Open UNIX 8.0.0

    5.1 Location of Fixed Binaries
   
    ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.3
   
   
    5.2 Verification
   
    MD5 (erg712227.pkg.Z) = 296bbcf1394f7010397b8d90f9a9978d
   
    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 erg712227.pkg.Z to the /var/spool/pkg directory
   
    # uncompress /var/spool/pkg/erg712227.pkg.Z
    # pkgadd -d /var/spool/pkg/erg712227.pkg
   

6. UnixWare 7.1.3

    6.1 Location of Fixed Binaries
   
    ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.3
   
   
    6.2 Verification
   
    MD5 (erg712227.pkg.Z) = 296bbcf1394f7010397b8d90f9a9978d
   
    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 erg712227.pkg.Z to the /var/spool/pkg directory
   
    # uncompress /var/spool/pkg/erg712227.pkg.Z
    # pkgadd -d /var/spool/pkg/erg712227.pkg
   

7. References

    Specific references for this advisory:
   
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0041
   
    SCO security resources:
   
            http://www.sco.com/support/security/index.html
   
    This security fix closes SCO incidents sr874929, fz527425,
    erg712227.
   

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

    This vulnerability was first published in 1997 on Bugtraq,
    and was discovered again by The Hackademy Audit team in
    September 2002 during a source code audit.