Denial of service in Red Hat JBoss Core Services Apache HTTP Server

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

JBoss Core Services: 2.4.37 SP8 - 2.4.57

jbcs-httpd24-nghttp2 (Red Hat package): before 1.43.0-12.el7jbcs

jbcs-httpd24-mod_security (Red Hat package): before 2.9.3-31.el7jbcs

jbcs-httpd24-mod_proxy_cluster (Red Hat package): before 1.3.19-6.el7jbcs

jbcs-httpd24-mod_md (Red Hat package): before 2.4.0-27.el7jbcs

jbcs-httpd24-mod_http2 (Red Hat package): before 1.15.19-30.el7jbcs

jbcs-httpd24-httpd (Red Hat package): before 2.4.57-6.el7jbcs

jbcs-httpd24-curl (Red Hat package): before 8.2.1-2.el7jbcs

CPE2.3

• cpe:2.3:a:red_hat:jboss_core_services:2.4.37:SP8:*:*:*:*:*:*
• cpe:2.3:a:red_hat:jboss_core_services:2.4.37:SP9:*:*:*:*:*:*
• cpe:2.3:a:red_hat:jboss_core_services:2.4.37:SP10:*:*:*:*:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-nghttp2_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-mod_security_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-mod_proxy_cluster_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-mod_md_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-mod_http2_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-httpd_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:o:red_hat:jbcs-httpd24-curl_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*

External links

https://access.redhat.com/errata/RHSA-2023:6105
https://access.redhat.com/errata/RHSA-2023:6106

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.