Vulnerability identifier: #VU88747

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-0838

CWE-ID: CWE-20

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 perform a denial of service (DoS) attack.

The vulnerability exists due to Apache Struts evaluates a string as an OGNL expression during the handling of a conversion error. A remote attacker can pass specially crafted input to the application to modify run-time data values, and consequently execute arbitrary code, via invalid input to a field.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Struts: 2.0.0 - 2.2.3

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External links
http://jvn.jp/en/jp/JVN79099262/index.html
http://jvndb.jvn.jp/jvndb/JVNDB-2012-000012
http://struts.apache.org/2.3.1.2/docs/s2-007.html
http://issues.apache.org/jira/browse/WW-3668

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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.