CVE-2021-22947

Open Source Curl Remote Code Execution Vulnerability

CVE-2021-22947 is fixed in 28 products on 2 platforms, first by curl 7.58.0-2ubuntu3.15, released September 14, 2021. It is not reported as exploited. Patch Radar priority: Urgent.

UrgentPublicly disclosedFixed on 2 platforms
CVSS
6.1
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0301
87th percentile

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Security Fix(es): * curl: Requirement to use TLS not properly enforced for IMAP, POP3, and FTP protocols (CVE-2021-22946) * curl: Server responses received before STARTTLS processed after TLS handshake (CVE-2021-22947) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1809 for 32-bit Systems 17763.2452 KB5009557 Jan 11, 2022
Windows 10 Version 1809 for ARM64-based Systems 17763.2452 KB5009557 Jan 11, 2022
Windows 10 Version 1809 for x64-based Systems 17763.2452 KB5009557 Jan 11, 2022
Windows 10 Version 1909 for 32-bit Systems 18363.2037 KB5009545 Jan 11, 2022
Windows 10 Version 1909 for ARM64-based Systems 18363.2037 KB5009545 Jan 11, 2022
Windows 10 Version 1909 for x64-based Systems 18363.2037 KB5009545 Jan 11, 2022
Windows 10 Version 20H2 for 32-bit Systems KB5009543 Jan 11, 2022
Windows 10 Version 20H2 for ARM64-based Systems KB5009543 Jan 11, 2022
Windows 10 Version 21H1 for 32-bit Systems KB5009543 Jan 11, 2022
Windows 10 Version 21H1 for ARM64-based Systems KB5009543 Jan 11, 2022
Windows 10 Version 21H1 for x64-based Systems KB5009543 Jan 11, 2022
Windows 10 Version 21H2 for 32-bit Systems KB5009543 Jan 11, 2022
Windows 10 Version 21H2 for ARM64-based Systems KB5009543 Jan 11, 2022
Windows 10 Version 21H2 for x64-based Systems KB5009543 Jan 11, 2022
Windows 11 version 21H2 for ARM64-based Systems 22000.434 KB5009566 Jan 11, 2022
Windows 11 version 21H2 for x64-based Systems 22000.434 KB5009566 Jan 11, 2022
Windows Server 2019 17763.2452 KB5009557 Jan 11, 2022
Windows Server 2019 (Server Core installation) 17763.2452 KB5009557 Jan 11, 2022
Windows Server 2022 20348.469 KB5009555 Jan 11, 2022
Windows Server 2022 (Server Core installation) 20348.469 KB5009555 Jan 11, 2022
Windows Server, version 20H2 (Server Core Installation) KB5009543 Jan 11, 2022
Linux
curl · RHEL 8 0:7.61.1-18.el8_4.2 RHSA-2021:4059 Nov 2, 2021
curl · Ubuntu 18.04.6 LTS (bionic) 7.58.0-2ubuntu3.15 curl 7.58.0-2ubuntu3.15 Sep 14, 2021
curl · Ubuntu 20.04 LTS (focal) 7.68.0-1ubuntu2.7 curl 7.68.0-1ubuntu2.7 Sep 14, 2021
curl · Ubuntu 22.04.1 LTS (jammy) 7.74.0-1.3ubuntu2 curl 7.74.0-1.3ubuntu2 Sep 14, 2021
curl · ol 8 0:7.61.1-18.el8_4.2 ELSA-2021-4059 Nov 2, 2021
libcurl · RHEL 8 0:7.61.1-18.el8_4.2 RHSA-2021:4059 Nov 2, 2021
libcurl · ol 8 0:7.61.1-18.el8_4.2 ELSA-2021-4059 Nov 2, 2021
libcurl-devel · RHEL 8 0:7.61.1-18.el8_4.2 RHSA-2021:4059 Nov 2, 2021
libcurl-devel · ol 8 0:7.61.1-18.el8_4.2 ELSA-2021-4059 Nov 2, 2021
libcurl-minimal · RHEL 8 0:7.61.1-18.el8_4.2 RHSA-2021:4059 Nov 2, 2021
libcurl-minimal · ol 8 0:7.61.1-18.el8_4.2 ELSA-2021-4059 Nov 2, 2021
libcurl3-gnutls · Ubuntu 18.04.6 LTS (bionic) 7.58.0-2ubuntu3.15 libcurl3-gnutls 7.58.0-2ubuntu3.15 Sep 14, 2021
libcurl3-gnutls · Ubuntu 20.04 LTS (focal) 7.68.0-1ubuntu2.7 libcurl3-gnutls 7.68.0-1ubuntu2.7 Sep 14, 2021
libcurl3-gnutls · Ubuntu 22.04.1 LTS (jammy) 7.74.0-1.3ubuntu2 libcurl3-gnutls 7.74.0-1.3ubuntu2 Sep 14, 2021
libcurl3-nss · Ubuntu 18.04.6 LTS (bionic) 7.58.0-2ubuntu3.15 libcurl3-nss 7.58.0-2ubuntu3.15 Sep 14, 2021
libcurl3-nss · Ubuntu 20.04 LTS (focal) 7.68.0-1ubuntu2.7 libcurl3-nss 7.68.0-1ubuntu2.7 Sep 14, 2021
libcurl3-nss · Ubuntu 22.04.1 LTS (jammy) 7.74.0-1.3ubuntu2 libcurl3-nss 7.74.0-1.3ubuntu2 Sep 14, 2021
libcurl4 · Ubuntu 18.04.6 LTS (bionic) 7.58.0-2ubuntu3.15 libcurl4 7.58.0-2ubuntu3.15 Sep 14, 2021
libcurl4 · Ubuntu 20.04 LTS (focal) 7.68.0-1ubuntu2.7 libcurl4 7.68.0-1ubuntu2.7 Sep 14, 2021
libcurl4 · Ubuntu 22.04.1 LTS (jammy) 7.74.0-1.3ubuntu2 libcurl4 7.74.0-1.3ubuntu2 Sep 14, 2021

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