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Known exploited vulnerability

CVE-2012-0391

criticalCVSS 3.1 9.8In CISA KEVEPSS 76%Published · n/a

The short answer

CVE-2012-0391 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-01-21: attackers are using it, so patch it first.

What it is

The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of properties, which allows remote attackers to execute arbitrary Java code via a crafted parameter.

Weakness: CWE-94.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Jan 21, 2022

Federal due date Jul 21, 2022

EPSS, next 30 days

76%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

n/a. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2012-0391 being exploited?

Yes. CISA added CVE-2012-0391 to its Known Exploited Vulnerabilities catalog on 2022-01-21, with a federal remediation due date of 2022-07-21.

How do I fix CVE-2012-0391?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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