CVE-2017-12149 on CISA KEV

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

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1486220
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:1608
• github.com — https://github.com/gottburgm/Exploits/tree/master/CVE-2017-12149
• www.securityfocus.com — http://www.securityfocus.com/bid/100591
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:1607

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Red Hat, Inc.	jbossas	n/a

06Detection

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