Advisory Details

November 15th, 2006

Verity Ultraseek Request Proxying Vulnerability

ZDI-06-042
ZDI-CAN-039

CVE ID CVE-2006-5819
CVSS SCORE
AFFECTED VENDORS Verity
AFFECTED PRODUCTS Ultraseek
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4287. For further product information on the TippingPoint IPS: http://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.

ADDITIONAL DETAILS 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
  • 2006-05-09 - Vulnerability reported to vendor
  • 2006-11-15 - Coordinated public release of advisory
CREDIT sullo / CIRT.net
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