CVE-2021-22945
When 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*.
- Score
- CVSS 3.1 9.1 Critical
- Status
- Modified - support@hackerone.com
- Published
- 2021-09-23
- Last modified
- 2026-10-14
- Weaknesses
- CWE-415
Affected products
- Macos (Apple)
- Debian Linux (Debian)
- Fedora (Fedoraproject)
- Libcurl (Haxx)
- Cloud Backup (Netapp)
- Clustered Data Ontap (Netapp)
- H300e Firmware (Netapp)
- H300s Firmware (Netapp)
- H410s Firmware (Netapp)
- H500e Firmware (Netapp)
- H500s Firmware (Netapp)
- H700e Firmware (Netapp)
- H700s Firmware (Netapp)
- Solidfire Baseboard Management Controller Firmware (Netapp)
- Mysql Server (Oracle)
- Simatic S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)
- Simatic S7-1500 Cpu 1518f-4 Pndp Mfp (Siemens)
- Sinec Ins (Siemens)
- Siplus S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)
- Universal Forwarder (Splunk)
References
- https://hackerone.com/reports/1269242
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGP…
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://security.netapp.com/advisory/ntap-20211029-0003/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRV…
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://support.apple.com/kb/HT213183
- http://seclists.org/fulldisclosure/2022/Mar/29
- https://www.debian.org/security/2022/dsa-5197
- https://security.gentoo.org/glsa/202212-01
- https://cert-portal.siemens.com/productcert/html/ssa-389290.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
