Denial of service in Red Hat WildFly

1) Resource exhaustion

EUVDB-ID: #VU11069

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9589

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in the Undertow component due to improper resource management. A remote attacker can use a cache of seen HTTP headers that is kept in persistent connections, send a specially crafted input, consume excessive amounts of memory resources and cause the service to crash.

Mitigation

Update to version 11.0.0.Beta1 or later.

Vulnerable software versions

Wildfly: 8.2.0 - 10.1.0

CPE2.3

• cpe:2.3:a:red_hat:wildfly:8.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:wildfly:8.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:wildfly:9.0.0:*:*:*:*:*:*:*

External links

https://issues.jboss.org/browse/WFLY-7725

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.