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CVE-2021-22897 Details

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NameCVE-2021-22897
StatusCandidate
Descriptioncurl 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.
ReferencesMISC: https://curl.se/docs/CVE-2021-22897.html
URL: https://curl.se/docs/CVE-2021-22897.html
MISC: https://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511
URL: https://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511
MISC: https://hackerone.com/reports/1172857
URL: https://hackerone.com/reports/1172857
PhaseAssigned (20210106)
VotesNone (candidate not yet proposed)
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