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TITLE:
Astaro Security Gateway CRL and OCSP Bypass Vulnerability

SECUNIA ADVISORY ID:
SA48750

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48750/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48750

RELEASE DATE:
2012-04-11

DISCUSS ADVISORY:
http://secunia.com/advisories/48750/#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/48750/

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=48750

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 a vulnerability in Astaro Security Gateway,
which can be exploited by malicious people to conduct spoofing
attacks.

The vulnerability is caused due to the gateway not validating 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.

The vulnerability is reported in version 8.300.

SOLUTION:
Currently there is no known workaround.

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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Please Note:
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Secunia NEVER sends attached files with advisories.
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