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SUSE SLES15 / openSUSE 15 Security Update : rubygem-websocket-extensions (SUSE-SU-2023:0127-1)

high Nessus Plugin ID 170607

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Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:0127-1 advisory.

 - websocket-extensions ruby module prior to 0.1.5 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and some other character. This could be abused by an attacker to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header. (CVE-2020-7663)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected ruby2.5-rubygem-websocket-extensions and / or ruby2.5-rubygem-websocket-extensions-doc packages.

See Also

https://bugzilla.suse.com/1172445

https://www.suse.com/security/cve/CVE-2020-7663

http://www.nessus.org/u?1e2c94a1

Plugin Details

Severity: High

ID: 170607

File Name: suse_SU-2023-0127-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 1/25/2023

Updated: 7/13/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2020-7663

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:ruby2.5-rubygem-websocket-extensions, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/24/2023

Vulnerability Publication Date: 6/2/2020

Reference Information

CVE: CVE-2020-7663

SuSE: SUSE-SU-2023:0127-1