CVE-2016-9589

moderate-risk
Published 2018-03-12

Undertow in Red Hat wildfly before version 11.0.0.Beta1 is vulnerable to a resource exhaustion resulting in a denial of service. Undertow keeps a cache of seen HTTP headers in persistent connections. It was found that this cache can easily exploited to fill memory with garbage, up to "max-headers" (default 200) * "max-header-size" (default 1MB) per active TCP connection.

Do I need to act?

~
2.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Redhat

References (26)

Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0830.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0831.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0832.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0834.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0876.html
Third Party Advisory http://www.securityfocus.com/bid/97060
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:0872
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:0873
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3454
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3455
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3456
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3458
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1404782
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0830.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0831.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0832.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0834.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-0876.html
Third Party Advisory http://www.securityfocus.com/bid/97060
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:0872
and 6 more references
38
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 5/34 · Minimal
Exposure 7/34 · Low