CURL-CVE-2021-22926
Dashboard / Vulnerabilities / CURL-CVE-2021-22926
Summary: CURLOPT_SSLCERT mix-up with Secure Transport
Details: 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 filename - using the same option. If the name exists as a file, it is used instead of by name. If the application runs with a current working directory that is writable by other users (like `/tmp`), a malicious user can create a filename 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.
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Affected packages
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Affected ranges
Type: SEMVER
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