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TITLE:
Apache Struts "ParameterInterceptor" Security Bypass Vulnerability

SECUNIA ADVISORY ID:
SA47711

VERIFY ADVISORY:
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http://secunia.com/advisories/47711/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47711

RELEASE DATE:
2012-01-23

DISCUSS ADVISORY:
http://secunia.com/advisories/47711/#comments

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http://secunia.com/advisories/47711/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=47711

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DESCRIPTION:
Meder Kydyraliev has reported a vulnerability in Apache Struts, which
can be exploited by malicious people to bypass certain security
restrictions.

The vulnerability is caused due to an error in the
"ParameterInterceptor" class, which can be exploited to modify
server-side objects and e.g. execute arbitrary commands via specially
crafted OGNL (Object-Graph Navigation Language) expressions.

This is related to vulnerability #1 in:
SA32497

The vulnerability is reported in versions prior to 2.3.1.2.

SOLUTION:
Update to version 2.3.1.2.

PROVIDED AND/OR DISCOVERED BY:
Meder Kydyraliev, Google Security Team.

ORIGINAL ADVISORY:
Apache:
http://struts.apache.org/2.x/docs/s2-009.html

Meder Kydyraliev:
http://blog.o0o.nu/2012/01/cve-2011-3923-yet-another-struts2.html

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:
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EXTENDED SOLUTION:
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EXPLOIT:
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http://secunia.com/vulnerability_intelligence/

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