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TITLE:
Cisco IronPort Web Security Appliance Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA48752

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48752/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48752

RELEASE DATE:
2012-04-10

DISCUSS ADVISORY:
http://secunia.com/advisories/48752/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/48752/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=48752

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
SecureWorks has reported multiple vulnerabilities in Cisco IronPort
Web Security Appliance, which can be exploited by malicious people to
conduct spoofing attacks.

1) The appliance does not validate the revocation status of an SSL
certificate via a CRL (Certificate Revocation List) or an OCSP
(Online Certificate Status Protocol) responder. This can be exploited
to conduct spoofing and interception attacks by using a revoked
certificate.

2) An error when validating the "basicConstraints" parameter of
certificates in the certificate chain can be exploited to spoof
certificates of arbitrary domains and disclose encrypted information
e.g. by using a Man-in-the-Middle (MitM) attack.

3) An error when validating the fingerprint of certificates can be
exploited to spoof certificates of arbitrary domains and disclose
encrypted information e.g. by using a Man-in-the-Middle (MitM)
attack.

SOLUTION:
Currently there is no known workaround.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
Jeff Jarmoc, SecureWorks.

ORIGINAL ADVISORY:
http://www.secureworks.com/research/threats/transitive-trust/

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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