Information disclosure in Apache Tomcat

1) Error Handling

EUVDB-ID: #VU63299

Risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-25762

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when handling WebSocket connections. If a web application sends a WebSocket message concurrently with the WebSocket connection closing, it is possible that the application will continue to use the socket after it has been closed. As a result, subsequent connections can use the same object concurrently and share data and/or other errors.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 8.5.0 - 9.0.20

External links

http://lists.apache.org/thread/6ckmjfb1k61dyzkto9vm2k5jvt4o7w7c
http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.21
http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.76

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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