ELSA-2021-4059: Security update for 4 packages

ELSA-2021-4059, released November 2, 2021, fixes 2 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent1 publicly disclosed

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0454

91st percentile

Priority of the 2 CVEs

Patch now 0
                                Urgent 1
                                High 1
                                Routine 0

Fixed package versions

Product	Release	Fixed in
curl	ol 8	0:7.61.1-18.el8_4.2
libcurl	ol 8	0:7.61.1-18.el8_4.2
libcurl-devel	ol 8	0:7.61.1-18.el8_4.2
libcurl-minimal	ol 8	0:7.61.1-18.el8_4.2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2021-22947	Open Source Curl Remote Code Execution Vulnerability	6.1	0.0301	DisclosedExploitation Less Likely
High	CVE-2021-22946	curl: The curl packages provide the libcurl library and the curl utility for downloading files from servers using various p...	7.5	0.0454	None reported

Also fixes CVE-2021-22947

KB5009557
Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for ARM64-based Systems, Windows 10 Version 1809 for x64-based Systems and 2 more
KB5009543
Windows 10 Version 20H2 for 32-bit Systems, Windows 10 Version 20H2 for ARM64-based Systems, Windows 10 Version 21H1 for 32-bit Systems and 6 more
KB5009555
Windows Server 2022, Windows Server 2022 (Server Core installation)
KB5009566
Windows 11 version 21H2 for ARM64-based Systems, Windows 11 version 21H2 for x64-based Systems
KB5009545
Windows 10 Version 1909 for 32-bit Systems, Windows 10 Version 1909 for ARM64-based Systems, Windows 10 Version 1909 for x64-based Systems
curl 7.74.0-1.3ubuntu2
curl on Ubuntu 22.04.1 LTS (jammy)
libcurl3-gnutls 7.74.0-1.3ubuntu2
libcurl3-gnutls on Ubuntu 22.04.1 LTS (jammy)
libcurl3-nss 7.74.0-1.3ubuntu2
libcurl3-nss on Ubuntu 22.04.1 LTS (jammy)

Vendor advisory

https://linux.oracle.com/errata/ELSA-2021-4059.html

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/elsa-2021-4059">ELSA-2021-4059 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.