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CVE-2006-1547: Apache Struts 1 ActionForm Denial-of-Service Vulnerability

criticalknown exploitedCVE-2006-1547
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.
ActionForm in Apache Struts versions before 1.2.9 with BeanUtils 1.7 contains a vulnerability that allows for denial-of-service (DoS).

CSIRTS triage

vendor: Apacheproduct: StrutsDenial of serviceaffected: < 1.2.9
What
ActionForm in Apache Struts contains a vulnerability that allows for denial-of-service (DoS).
Who is affected
Deployments of Apache Struts versions before 1.2.9.
Urgency
Remediation is urgent as the vulnerability is actively exploited and rated critical.
Action
Upgrade to Apache Struts version 1.2.9 or later.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-01-21
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2006-1547

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-2006-1547coverage & exploitation statusNVD · CVE.org

Recent advisories for Apache Struts

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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