TippingPoint IPS customers have been protected against this vulnerability since April 3, 2006 by Digital Vaccine protection filter ID 4287. For further product information on the TippingPoint IPS:

    www.tippingpoint.com

Vulnerability Details:
This vulnerability allows remote attackers to proxy web attacks and scan internal hosts through vulnerable installations of Verity Ultraseek. Authentication is not required to exploit this vulnerability...

The specific flaw exists within the highlight script used to highlight search terms on spidered pages. An attacker can directly access the highlight script at '/highlight/index.html' to pass parameters to and retrieve content from arbitrary URLs. The same script can also be abused to enumerate otherwise inaccessible internal addresses and open ports.

Ultraseek also exposes various information disclosure vulnerabilities through the following scripts:

    /help/urlstatusgo.html
    /help/header.html
    /help/footer.html
    /spell.html
    /coreforma.html
    /daterange.html
    /hits.html
    /hitsnavbottom.html
    /indexform.html
    /indexforma.html
    /languages.html
    /nohits.html
    /onehit1.html
    /onehit2.html
    /query.html
    /queryform0.html
    /queryform0a.html
    /queryform1.html
    /queryform1a.html
    /queryform2.html
    /queryform2a.html
    /quicklinks.html
    /relatedtopics.html
    /signin.html
    /subtopics.html
    /thesaurus.html
    /topics.html
    /hitspagebar.html
    /highlight/highlight.html
    /highlight/highlight_one.html
    /highlight/topnav.html

Authenticated Ultraseek users can further abuse another vulnerability to retrieve arbitrary file contents from the underyling server through the '/admin/logfile.txt' script.

Vendor Response:
Verity has issued an update to correct this vulnerability. More details can be found at:

    http://www.ultraseek.com/support/docs/RELNOTES.txt

Disclosure Timeline:

Credit:
This vulnerability was discovered by sullo / CIRT.net

About the Zero Day Initiative (ZDI):
Established by TippingPoint, a division of 3Com, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at:

    www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is used. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.

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