curl 7.61.0 through 7.76.1 suffers from exposure of data element to wrong session due to a mistake in the code for CURLOPT_SSL_CIPHER_LIST when libcurl is built to use the Schannel TLS library. The selected cipher set was stored in a single "static" variable in the library, which has the surprising side-effect that if an application sets up multiple concurrent transfers, the last one that sets the ciphers will accidentally control the set used by all transfers. In a worst-case scenario, this weakens transport security significantly.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2021-06-11T15:49:38

Updated: 2024-08-03T18:58:24.782Z

Reserved: 2021-01-06T00:00:00

Link: CVE-2021-22897

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-06-11T16:15:10.963

Modified: 2024-11-21T05:50:51.927

Link: CVE-2021-22897

cve-icon Redhat

Severity : Low

Publid Date: 2021-05-26T00:00:00Z

Links: CVE-2021-22897 - Bugzilla