Vulnerability Description
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the `CURLOPT_SSLCERT` 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.33.0, < 7.78.0 |
| Netapp | Active Iq Unified Manager | - |
| Netapp | Clustered Data Ontap | - |
| Netapp | Hci Management Node | - |
| Netapp | Oncommand Insight | - |
| Netapp | Oncommand Workflow Automation | - |
| Netapp | Snapcenter | - |
| Netapp | Solidfire | - |
| Oracle | Mysql Server | >= 5.7.0, <= 5.7.35 |
| Oracle | Peoplesoft Enterprise Peopletools | 8.57 |
| Siemens | Sinec Infrastructure Network Services | < 1.0.1.1 |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatchThird Party Advisory
- https://hackerone.com/reports/1234760ExploitThird Party Advisory
- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01bMailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01bMailing ListThird Party Advisory
- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c2Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c2Mailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202212-01Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0003/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211022-0003/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatchThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatchThird Party Advisory
- https://hackerone.com/reports/1234760ExploitThird Party Advisory
- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01bMailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01bMailing ListThird Party Advisory
FAQ
What is CVE-2021-22926?
CVE-2021-22926 is a vulnerability with a CVSS score of 7.5 (HIGH). libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the `CURLOPT_SSLCERT` option (`--cert` with the command line tool).When libcurl is buil...
How severe is CVE-2021-22926?
CVE-2021-22926 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-22926?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl, Netapp Active Iq Unified Manager, Netapp Clustered Data Ontap, Netapp Hci Management Node, Netapp Oncommand Insight.