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CVE-2007-4556

6.8 · MEDIUM

Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expressi…

Published Aug 28, 2007opensymphonyEPSS 25.75%

Overview

CVE-2007-4556 is a medium-severity vulnerability affecting opensymphony xwork. It was published on August 28, 2007 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expression when altSyntax is enabled, which allows remote attackers to cause a denial of service (infinite loop) or execute arbitrary code via form input beginning with a "%{" sequence and ending with a "}" character.

Remediation

Check the references section for vendor advisories and patches from opensymphony. Update xwork to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
opensymphonyxwork>= 0, < 1.2.3Affected

References

Refforums.opensymphony.com/ann.jspa?annID=54Refissues.apache.org/struts/browse/WW-2030Refjira.opensymphony.com/browse/XW-544Refjira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21701Refjira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21706Refosvdb.org/37072Refsecunia.com/advisories/26681Refsecunia.com/advisories/26693Refsecunia.com/advisories/26694Refstruts.apache.org/2.x/docs/s2-001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2007-4556?

CVE-2007-4556 is a medium-severity vulnerability affecting opensymphony xwork. It was published on August 28, 2007 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2007-4556?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2007-4556?

Check the references section for vendor advisories and patches from opensymphony. Update xwork to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2007-4556?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2007-4556 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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