CURL-CVE-2021-22926
- Source
- https://curl.se/docs/CVE-2021-22926.html
- Import Source
- https://curl.se/docs/CURL-CVE-2021-22926.json
- JSON Data
- https://api.osv.dev/v1/vulns/CURL-CVE-2021-22926
- Aliases
- Published
- 2021-07-21T08:00:00Z
- Modified
- 2024-06-07T13:53:51Z
- 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_SSLCERToption (--certwith 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. - References
-
- Credits
-
-
- Harry Sintonen - FINDER
-
- Daniel Stenberg - REMEDIATION_DEVELOPER
-
Affected packages
Git / github.com/curl/curl.git
Affected ranges
- Type
- SEMVER
- Events
-
Introduced7.33.0Fixed7.78.0
- Type
- GIT
- Repo
- https://github.com/curl/curl.git
- Events