Rapid Reset attack in Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9

1) Resource exhaustion

EUVDB-ID: #VU81728

Risk: High

CVSSv4.0: 6.9 [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:A/U:Amber]

CVE-ID: CVE-2023-44487

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

eap7-wildfly (Red Hat package): before 7.4.13-10.GA_redhat_00002.1.el7eap

eap7-undertow (Red Hat package): before 2.2.26-2.SP2_redhat_00001.1.el7eap

eap7-netty-transport-native-epoll (Red Hat package): before 4.1.94-2.Final_redhat_00003.1.el7eap

eap7-netty (Red Hat package): before 4.1.94-2.Final_redhat_00003.1.el7eap

CPE2.3

• cpe:2.3:o:red_hat:eap7-wildfly_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:eap7-undertow_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:eap7-netty-transport-native-epoll_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:eap7-netty_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*

External links

https://access.redhat.com/errata/RHSA-2023:5920
https://access.redhat.com/errata/RHSA-2023:5922

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?

Yes. This vulnerability is being exploited in the wild.