Vulnerabilities > CVE-2007-4556 - Unspecified vulnerability in Opensymphony Xwork
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL network
opensymphony
Summary
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.
Vulnerable Configurations
References
- http://forums.opensymphony.com/ann.jspa?annID=54
- http://issues.apache.org/struts/browse/WW-2030
- http://jira.opensymphony.com/browse/XW-544
- http://jira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21701
- http://jira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21706
- http://osvdb.org/37072
- http://secunia.com/advisories/26681
- http://secunia.com/advisories/26693
- http://secunia.com/advisories/26694
- http://struts.apache.org/2.x/docs/s2-001.html
- http://wiki.opensymphony.com/display/WW/1.2.3+Press+Release
- http://www.securityfocus.com/bid/25524
- http://www.vupen.com/english/advisories/2007/3041
- http://www.vupen.com/english/advisories/2007/3042