haxx curl CVE-2021-22926 vulnerability in Haxx and Other Products
Published on August 5, 2021

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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.

Vendor Advisory NVD

Weakness Type

Business Logic Errors

Weaknesses in this category identify some of the underlying problems that commonly allow attackers to manipulate the business logic of an application. Errors in business logic can be devastating to an entire application. They can be difficult to find automatically, since they typically involve legitimate use of the application's functionality. However, many business logic errors can exhibit patterns that are similar to well-understood implementation and design weaknesses.


Products Associated with CVE-2021-22926

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-22926 are published in these products:

Haxx Curl
 
NetApp Clustered Data Ontap
 
NetApp Hci Management Node
 
NetApp Solidfire
 
NetApp Active Iq Unified Manager
 
NetApp Oncommand Insight
 
NetApp Oncommand Workflow Automation
 
NetApp Snapcenter
 
Oracle MySQL
 
Oracle Peoplesoft Enterprise Peopletools
 
Siemens Sinec Infrastructure Network Services
 
Splunk Universal Forwarder
 

Exploit Probability

EPSS
0.66%
Percentile
70.67%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.