CVE-2021-22945

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Summary

CVECVE-2021-22945
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-09-23 13:15:08 UTC
Updated2026-10-14 12:17:08 UTC
DescriptionWhen sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Problem Types: CWE-415 | CWE-415 Double Free (CWE-415) | CWE-415 CWE-415 Double Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
2.0[email protected]Primary5.8AV:N/AC:M/Au:N/C:P/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial

AV:N/AC:M/Au:N/C:P/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Macos All All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 35 All All All
Application Haxx Libcurl All All All All
Application Netapp Cloud Backup - All All All
Application Netapp Clustered Data Ontap - All All All
Hardware Netapp H300e - All All All
Operating System Netapp H300e Firmware - All All All
Hardware Netapp H300s - All All All
Operating System Netapp H300s Firmware - All All All
Hardware Netapp H410s - All All All
Operating System Netapp H410s Firmware - All All All
Hardware Netapp H500e - All All All
Operating System Netapp H500e Firmware - All All All
Hardware Netapp H500s - All All All
Operating System Netapp H500s Firmware - All All All
Hardware Netapp H700e - All All All
Operating System Netapp H700e Firmware - All All All
Hardware Netapp H700s - All All All
Operating System Netapp H700s Firmware - All All All
Hardware Netapp Solidfire Baseboard Management Controller - All All All
Operating System Netapp Solidfire Baseboard Management Controller Firmware - All All All
Application Oracle Mysql Server All All All All
Application Oracle Mysql Server All All All All
Application Siemens Sinec Ins All All All All
Application Splunk Universal Forwarder All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Https//github.com/curl/curl affected curl 7.73.0 to and including 7.78.0 Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
Oracle Critical Patch Update Advisory - October 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
About the security content of macOS Monterey 12.3 - Apple Support (PH) af854a3a-2127-422b-91ae-364da2661108 support.apple.com Third Party Advisory
curl: Multiple Vulnerabilities (GLSA 202212-01) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-389290.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 35 Update: curl-7.79.1-1.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
Debian -- Security Information -- DSA-5197-1 curl af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
HackerOne af854a3a-2127-422b-91ae-364da2661108 hackerone.com Exploit, Patch, Third Party Advisory
September 2021 cURL/libcURL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
[SECURITY] Fedora 33 Update: curl-7.71.1-11.fc33 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com Patch, Third Party Advisory
Full Disclosure: APPLE-SA-2022-03-14-4 macOS Monterey 12.3 af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
[SECURITY] Fedora 35 Update: curl-7.79.1-1.fc35 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 33 Update: curl-7.71.1-11.fc33 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 180909 Debian Security Update for curl (DSA 5197-1)
  • 183468 Debian Security Update for curl (CVE-2021-22945)
  • 198501 Ubuntu Security Notification for curl Vulnerabilities (USN-5079-1)
  • 281920 Fedora Security Update for curl (FEDORA-2021-c5584b92d4)
  • 281955 Fedora Security Update for curl (FEDORA-2021-fc96a3a749)
  • 296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
  • 353082 Amazon Linux Security Advisory for curl : ALAS2-2021-1724
  • 376485 Apple MacOS Monterey 12.3 Not Installed (HT213183)
  • 376968 NetApp Clustered Data Open Network Technology for Appliance Products (ONTAP) Disclosure of Sensitive Information Vulnerability (NTAP-20211029-0003)
  • 378599 Splunk Enterprise Third Party Package Updates for June (SVD-2023-0613)
  • 378883 Splunk Enterprise August Third Party Package Updates (SVD-2023-0808)
  • 500137 Alpine Linux Security Update for curl
  • 503788 Alpine Linux Security Update for curl
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 690014 Free Berkeley Software Distribution (FreeBSD) Security Update for curl (c9221ec9-17a2-11ec-b335-d4c9ef517024)
  • 710693 Gentoo Linux curl Multiple Vulnerabilities (GLSA 202212-01)
  • 730371 McAfee Web Gateway Multiple Vulnerabilities (WP-3335,WP-4131,WP-4159,WP-4237,WP-4259,WP-4329,WP-4348,WP-4355,WP-4376,WP-4407,WP-4421)
  • 900339 Common Base Linux Mariner (CBL-Mariner) Security Update for curl (5940)
  • 901395 Common Base Linux Mariner (CBL-Mariner) Security Update for curl (6368-1)
  • 904921 Common Base Linux Mariner (CBL-Mariner) Security Update for cmake (12310)
  • 905106 Common Base Linux Mariner (CBL-Mariner) Security Update for cmake (12466)

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