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CVE-2013-2251: Apache Struts Improper Input Validation Vulnerability

criticalknown exploitedpublic exploitCVE-2013-2251
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Apache Struts allows remote attackers to execute arbitrary Object-Graph Navigation Language (OGNL) expressions.

CSIRTS triage

vendor: Apacheproduct: StrutsRemote code execution
What
Apache Struts allows remote attackers to execute arbitrary Object-Graph Navigation Language (OGNL) expressions.
Who is affected
Deployments of Apache Struts are affected.
Urgency
Immediate action is required due to the critical nature of the vulnerability and its exploitation status.
Action
Update Apache Struts to the latest version.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2013-2251

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2013-2251coverage & exploitation statusNVD · CVE.org

Recent advisories for Apache Struts Improper

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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