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CBL Mariner 2.0 Security Update: kured (CVE-2022-21698)

high Nessus Plugin ID 185993

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of kured installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-21698 advisory.

 - client_golang is the instrumentation library for Go applications in Prometheus, and the promhttp package in client_golang provides tooling around HTTP servers and clients. In client_golang prior to version 1.11.1, HTTP server is susceptible to a Denial of Service through unbounded cardinality, and potential memory exhaustion, when handling requests with non-standard HTTP methods. In order to be affected, an instrumented software must use any of `promhttp.InstrumentHandler*` middleware except `RequestsInFlight`;
 not filter any specific methods (e.g GET) before middleware; pass metric with `method` label name to our middleware; and not have any firewall/LB/proxy that filters away requests with unknown `method`.
 client_golang version 1.11.1 contains a patch for this issue. Several workarounds are available, including removing the `method` label name from counter/gauge used in the InstrumentHandler; turning off affected promhttp handlers; adding custom middleware before promhttp handler that will sanitize the request method given by Go http.Request; and using a reverse proxy or web application firewall, configured to only allow a limited set of methods. (CVE-2022-21698)

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 packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2022-21698

Plugin Details

Severity: High

ID: 185993

File Name: mariner_kured_CVE-2022-21698.nasl

Version: 1.0

Type: local

Published: 11/19/2023

Updated: 11/19/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2022-21698

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:cbl-mariner:kured, p-cpe:/a:microsoft:cbl-mariner:kured-k8s-yaml, x-cpe:/o:microsoft:cbl-mariner

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2023

Vulnerability Publication Date: 2/15/2022

Reference Information

CVE: CVE-2022-21698