Vulnerability in Opensymphony Xwork
CVE-2007-4556
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.257 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.257 · newest: 0.257 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/25524 (VDB Entry, Third Party Advisory, vdb-entry)
- jira.opensymphony.com/browse/XW-544 (Vendor Advisory)
- issues.apache.org/struts/browse/WW-2030 (Third Party Advisory)
- www.vupen.com/english/advisories/2007/3041 (Third Party Advisory, vdb-entry)
- forums.opensymphony.com/ann.jspa (Patch, Vendor Advisory)
- www.vupen.com/english/advisories/2007/3042 (Third Party Advisory, vdb-entry)
- secunia.com/advisories/26693 (Third Party Advisory, third-party-advisory)
- secunia.com/advisories/26681 (Third Party Advisory, third-party-advisory)
- wiki.opensymphony.com/display/WW/1.2.3+Press+Release (Vendor Advisory)
- jira.opensymphony.com/secure/ReleaseNote.jspa (Vendor Advisory)
Frequently asked questions
- What is CVE-2007-4556?
- CVE-2007-4556 is a vulnerability in Opensymphony Xwork. Published 2007-08-28.
- Is CVE-2007-4556 known to be exploited?
- 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.