NULL Pointer Dereference Affecting servicemesh-pilot-discovery package, versions <0:2.1.2-4.el8


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.06% (61st percentile)

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  • Snyk IDSNYK-RHEL8-SERVICEMESHPILOTDISCOVERY-4398425
  • published26 Mar 2023
  • disclosed22 Feb 2022

Introduced: 22 Feb 2022

CVE-2021-43824  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:8 servicemesh-pilot-discovery to version 0:2.1.2-4.el8 or higher.
This issue was patched in RHSA-2022:1275.

NVD Description

Note: Versions mentioned in the description apply only to the upstream servicemesh-pilot-discovery package and not the servicemesh-pilot-discovery package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions a crafted request crashes Envoy when a CONNECT request is sent to JWT filter configured with regex match. This provides a denial of service attack vector. The only workaround is to not use regex in the JWT filter. Users are advised to upgrade.

CVSS Base Scores

version 3.1