#VU88750 Permissions, Privileges, and Access Controls in Apache Struts - CVE-2012-0393

Vulnerability identifier: #VU88750

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-0393

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Struts
Server applications / Frameworks for developing and running applications

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to parameterInterceptor component in Apache Struts does not prevent access to public constructors. A remote attacker can create or overwrite arbitrary files via a crafted parameter that triggers the creation of a Java object.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Struts: 2.0.0 - 2.3.1

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External links
http://archives.neohapsis.com/archives/bugtraq/2012-01/0031.html
http://secunia.com/advisories/47393
http://struts.apache.org/2.x/docs/s2-008.html
http://struts.apache.org/2.x/docs/version-notes-2311.html
http://www.exploit-db.com/exploits/18329
http://www.sec-consult.com/files/20120104-0_Apache_Struts2_Multiple_Critical_Vulnerabilities.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.