[Full-disclosure] SCOSA-2006.16 UnixWare 7.1.4 : libcurl URL Parsing Vulnerability

[SCO Security Advisories <security@xxxxxxx>]

-- 
Dr. Ronald Joe Record
Chief Security Officer
SCO
rr@xxxxxxx

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                        SCO Security Advisory

Subject:                UnixWare 7.1.4 : libcurl URL Parsing Vulnerability
Advisory number:        SCOSA-2006.16
Issue date:             2006 March 28
Cross reference:        fz533390
                        CVE-2005-4077 
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1. Problem Description

        This vulnerability is caused due to an off-by-one error
        when parsing a URL that is longer than 256 bytes. By using
        a specially crafted URL, a two-byte overflow is reportedly
        possible. This may be exploited to corrupt memory allocation
        structures. The vulnerability is reportedly exploitable
        only via a direct request to cURL and not via a redirect.
        The vulnerability has been reported in version 7.15.0 and
        prior.
        
        The Common Vulnerabilities and Exposures project
        (cve.mitre.org) has assigned the name CVE-2005-4077 to
        this issue.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.4                  The curl package


3. Solution

        The proper solution is to install the latest packages.


4. UnixWare 7.1.4

        4.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2006.16


        4.2 Verification

        MD5 (curl-7.15.1.pkg) = 62f7076f2d1096e131dd0e9780ee15fd

        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 curl-7.15.1.pkg to the /var/spool/pkg directory

        # pkgadd -d /var/spool/pkg/curl-7.15.1.pkg


5. References

        Specific references for this advisory:
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4077
                http://www.hardened-php.net/advisory_242005.109.html 
                http://secunia.com/advisories/17907/

        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 fz533390.


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.


7. Acknowledgments

        Provided and/or discovered by: Stefan Esser, Hardened PHP Project.

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