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The cipher selection is used for the TLS negotiation when a transfer is done involving any of the TLS based transfer protocols libcurl supports, such as HTTPS, FTPS, IMAPS, POP3S, SMTPS, etc. Due to a mistake in the code, the selected cipher set was stored in a single \"static\" variable in the library, which contains a 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. The highest threat from this vulnerability is to confidentiality.", "title": "Vulnerability description" } ], "product_status": { "known_affected": [ "ceph-2:curl", "ceph-2:curl.src", "ceph-2:libcurl" ], "known_not_affected": [ "dotnet-2.1:rh-dotnet21-curl", "dotnet-2.1:rh-dotnet21-curl.src", "dotnet-2.1:rh-dotnet21-libcurl", "dotnet-2.1:rh-dotnet21-libcurl-devel", "dotnet-3.1:rh-dotnet31-curl", "dotnet-3.1:rh-dotnet31-curl.src", "dotnet-3.1:rh-dotnet31-libcurl", "dotnet-3.1:rh-dotnet31-libcurl-devel", "rhel-6-els.els:curl", "rhel-6-els.els:curl-debuginfo", "rhel-6-els.els:curl.src", "rhel-6-els.els:libcurl", "rhel-6-els.els:libcurl-devel", "rhel-7-els.els:curl", "rhel-7-els.els:curl-debuginfo", "rhel-7-els.els:curl.src", "rhel-7-els.els:libcurl", "rhel-7-els.els:libcurl-devel", "rhel-8.10.z:curl", "rhel-8.10.z:curl-debuginfo", "rhel-8.10.z:curl-debugsource", "rhel-8.10.z:curl-minimal", "rhel-8.10.z:curl-minimal-debuginfo", "rhel-8.10.z:curl.src", "rhel-8.10.z:libcurl", 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