CVE-2021-22926: High severity haxx curl vulnerability
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the CURLOPTSSLCERT option (--cert with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate by name or with a file name - using the same option. If the name exists as a file, it will be used instead of by name.If the appliction runs with a current working directory that is writable by other users (like /tmp), a malicious user can create a file name with the same name as the app wants to use by name, and thereby trick the application to use the file based cert instead of the one referred to by name making libcurl send the wrong client certificate in the TLS connection handshake.
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is CVE-2021-22926?
CVE-2021-22926 is a vulnerability that affects libcurl-using applications and allows an application to ask for a specific client certificate to be used in a transfer.
How does CVE-2021-22926 impact macOS native TLS library Secure Transport?
If libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate, which can lead to potential security issues.
Which software is affected by CVE-2021-22926?
Haxx Curl, Apple iPadOS, Apple watchOS, NetApp Clustered Data ONTAP, Netapp Hci Management Node, NetApp OnCommand Insight, NetApp OnCommand Workflow Automation, Netapp Snapcenter, Netapp Solidfire, Oracle Mysql Server, Oracle PeopleSoft Enterprise PeopleTools, Siemens Sinec Infrastructure Network Services, Apple macOS Ventura, Netapp H300e Firmware, Netapp H500e Firmware, Apple macOS Big Sur, Netapp H700s Firmware, Netapp H410s Firmware, and Apple macOS Monterey are affected by this vulnerability.
How severe is CVE-2021-22926?
CVE-2021-22926 has a severity rating of 7.5, which is considered high.
Where can I find more information about CVE-2021-22926?
You can find more information about CVE-2021-22926 in the references provided: [Reference 1](https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf), [Reference 2](https://hackerone.com/reports/1234760), [Reference 3](https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc@%3Cdev.kafka.apache.org%3E).