[Full-disclosure] SCOSA-2005.55 UnixWare 7.1.3 UnixWare 7.1.4 : Lynx Command Injection Vulnerability

[security@xxxxxxx]

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                        SCO Security Advisory

Subject:                UnixWare 7.1.3 UnixWare 7.1.4 : Lynx Command Injection 
Vulnerability
Advisory number:        SCOSA-2005.55
Issue date:             2005 December 14
Cross reference:        fz533314
                        CVE-2005-2929

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1. Problem Description

        Remote exploitation of a command injection vulnerability  could
        allow attackers to execute arbitrary commands with the
        privileges of the underlying user.

        The problem specifically exists within the feature to execute
        local cgi-bin programs via the "lynxcgi:" URI handler. The
        handler is generally intended to be restricted to a specific
        directory or program(s). However, due to a configuration error
        on multiple platforms, the default settings allow for arbitrary
        websites to specify commands to run as the user running Lynx.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CVE-2005-2929 to this issue.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.3                  /usr/gnu/bin/lynx
        UnixWare 7.1.4                  /usr/gnu/bin/lynx


3. Solution

        The proper solution is to install the latest packages.


4. UnixWare 7.1.3 and UnixWare 7.1.4

        4.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.55


    4.2 Verification

        MD5 (p533314.image) = 5f961a4297468def32fb81285bbed2fb

        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 p533314.image to the /var/spool/pkg directory.

        # pkgadd -d /var/spool/pkg/p533314.image


5. References

        Specific references for this advisory:
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2929
                http://securitytracker.com/id?1015195
                
http://www.idefense.com/application/poi/display?id=338&type=vulnerabilities
                http://www.securityfocus.com/bid/15395

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

        SCO security advisories via email
                http://www.sco.com/support/forums/security.html

        This security fix closes SCO incidents fz533314.


6. 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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