Red Hat JBoss Application Server Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-12-10
• Known to be used in ransomware campaigns
• EPSS: 91% chance of exploitation in the next 30 days (higher than 100% of CVEs)
• Critical severity: CVSS 9.8

[ Description ]Official description

In Jboss Application Server as shipped with Red Hat Enterprise Application Platform 5.2, it was found that the doFilter method in the ReadOnlyAccessFilter of the HTTP Invoker does not restrict classes for which it performs deserialization and thus allowing an attacker to execute arbitrary code via crafted serialized data.

CISA: The JBoss Application Server, shipped with Red Hat Enterprise Application Platform 5.2, allows an attacker to execute arbitrary code via crafted serialized data.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 10 Jun 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.securityfocus.com/bid/100591Third Party AdvisoryVDB Entry
• access.redhat.com/errata/RHSA-2018:1607Third Party Advisory
• access.redhat.com/errata/RHSA-2018:1608Third Party Advisory
• bugzilla.redhat.com/show_bug.cgiIssue Tracking
• github.com/gottburgm/Exploits/tree/master/CVE-2017-12149Third Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource