Anolis OS update for tomcat

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 repository.

Vulnerable software versions

Anolis OS: 8

tomcat-webapps: before 9.0.62-5

tomcat-servlet-4.0-api: before 9.0.62-5

tomcat-lib: before 9.0.62-5

tomcat-jsp-2.3-api: before 9.0.62-5

tomcat-el-3.0-api: before 9.0.62-5

tomcat-docs-webapp: before 9.0.62-5

tomcat-admin-webapps: before 9.0.62-5

tomcat: before 9.0.62-5

CPE2.3

• cpe:2.3:o:openanolis:anolis_os:8:*:*:*:*:*:*:*
• cpe:2.3:a:openanolis:tomcat-webapps:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat-servlet-4_0-api:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat-lib:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat-jsp-2_3-api:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat-el-3_0-api:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat-docs-webapp:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat-admin-webapps:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:a:openanolis:tomcat:*:*:*:*:*:anolis_os:*:*

External links

https://anas.openanolis.cn/errata/detail/ANSA-2023:0630

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.