SUSE update for rubygem-websocket-extensions

1) Incorrect Regular Expression

EUVDB-ID: #VU71542

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7663

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation when processing  a malicious payload with the Sec-WebSocket-Extensions header. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Update the affected package rubygem-websocket-extensions to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 15-SP1 - 15-SP4

SUSE Linux Enterprise High Performance Computing: 15-SP1 - 15-SP4

SUSE Enterprise Storage: 6 - 7.1

SUSE Manager Retail Branch Server: 4.0 - 4.3

SUSE Linux Enterprise High Availability: 15-SP1 - 15-SP4

SUSE Manager Proxy: 4.0 - 4.3

SUSE Manager Server: 4.0 - 4.3

SUSE Linux Enterprise Server for SAP Applications: 15-SP1 - 15-SP4

openSUSE Leap: 15.4

ruby2.5-rubygem-websocket-extensions-doc: before 0.1.3-150000.3.4.1

ruby2.5-rubygem-websocket-extensions: before 0.1.3-150000.3.4.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230127-1/

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.