ALPINE-CVE-2021-22926
ALPINE-CVE-2021-22926
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 7.5 · High · Fix available
- Published
- Updated
Stack: system
Affected products and versions
curl Alpine:v3.11
- Affected ranges
- ECOSYSTEM: ≥ 7.33.0, < 7.67.0-r5
Update to 7.67.0-r5