[Full-disclosure] SCOSA-2005.44 UnixWare 7.1.4 : Squid Denial of Service

[security@xxxxxxx]

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                        SCO Security Advisory

Subject:                UnixWare 7.1.4 : Squid Denial of Service
Advisory number:        SCOSA-2005.44
Issue date:             2005 November 01
Cross reference:        fz533116 fz533151 fz533254
                        CAN-2005-2794 CAN-2005-2796 CVE-2005-2917 CVE-2005-3258
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1. Problem Description

        store.c in Squid 2.5.STABLE10 and earlier allows remote
        attackers to cause a denial of service (crash) via certain
        aborted requests that trigger an assert error related to
        STORE_PENDING.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CAN-2005-2794 to this issue.

        The sslConnectTimeout function in ssl.c for Squid 2.5.STABLE10
        and earlier allows remote attackers to cause a denial of service
        (segmentation fault) via certain crafted requests.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CAN-2005-2796 to this issue.

        Squid 2.5.STABLE10 and earlier, while performing NTLM
        authentication, does not properly handle certain request
        sequences, which allows attackers to cause a denial of service
        (daemon restart).

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CVE-2005-2917 to this issue

        The rfc1738_do_escape function in ftp.c for Squid 2.5 STABLE11
        and earlier allows remote FTP servers to cause a denial of
        service (segmentation fault) via certain "odd" responses.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CVE-2005-3258 to this issue.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.4                  squid 2.5.STABLE12 distribution


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-2005.44


    4.2 Verification

        32fd0223233496f737e85a9aa31f00a4  squid-2.5.STABLE12.image

        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 squid-2.5.STABLE12.image to the /var/spool/pkg directory

        # pkgadd -d /var/spool/pkg/squid-2.5.STABLE12.image


5. References

        Specific references for this advisory:
                
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE10-STORE_PENDING
                
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE10-sslConnectTimeout
                
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE11-rfc1738_do_escape
                http://securitytracker.com/id?1014846
                http://secunia.com/advisories/16992
                http://secunia.com/advisories/17271
                http://www.frsirt.com/english/advisories/2005/2151

        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 fz533116 fz533151
        fz533254.


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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