Exploited vulnerability · CISA KEV

Is CVE-2012-5076 exploited? Yes: in CISA KEV since 28 Mar 2022

Gociux · Oracle Java SE · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2012-5076, Oracle Java SE Sandbox Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Mar 2022, 3450 days after it was published. It affects Oracle Java SE. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 28 Mar 2022

ransomwareNot knownno confirmed use

EPSStop 1%among the most likely CVEs to be exploited

severity9.8CVSS 3.1 · critical

US federal due18 Apr 2022BOD 22-01 deadline

What it is

The default Java security properties configuration did not restrict access to the com.sun.org.glassfish.external and com.sun.org.glassfish.gmbal packages. An untrusted Java application or applet could use these flaws to bypass Java sandbox restrictions.

Vendor	Oracle (46 exploited CVEs in KEV)
Product	Java SE
Vulnerability	Oracle Java SE Sandbox Bypass Vulnerability
Weakness	not specified
Published	16 Oct 2012
Added to KEV	28 Mar 2022
Reported by (CNA)	oracle

What to do

Check whether you run it. Look for Java SE in your asset inventory, including appliances and cloud images. Stack check lists every exploited Oracle CVE at once.
Apply the fix. Apply updates per vendor instructions.
If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 16 Oct 2012.
Get told next time. Email alerts when CISA adds a CVE for Oracle.

Other exploited CVEs in Java SE

CVE-2013-2465: Oracle Java SE Unspecified Vulnerability (28 Mar 2022)
CVE-2015-4902: Oracle Java SE Integrity Check Vulnerability (3 Mar 2022)
CVE-2015-2590: Oracle Java SE and Java SE Embedded Remote Code Execution Vulnerability (3 Mar 2022)
CVE-2012-4681: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability (3 Mar 2022)
CVE-2012-1723: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability (3 Mar 2022)
CVE-2012-0507: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability (3 Mar 2022)

References

nvd.nist.gov/vuln/detail/CVE-2012-5076

Questions

Is CVE-2012-5076 being exploited?

Yes. CISA added CVE-2012-5076 to the Known Exploited Vulnerabilities catalog on 28 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2012-5076 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2012-5076?

Apply updates per vendor instructions. Check Oracle's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Java SE and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · Oracle scorecard · act-now radar.

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