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An improper certificate validation vulnerability exists in curl <v8.1. ...

An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously wasused to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the second transfer. The problem exists in the logic for a reused handle when it is (expected to be) changed from a PUT to a POST.

Уязвимость библиотеки libcurl, связанная с ошибками при отправке HTTP-запросов POST и PUT с использованием одного и того же дескриптора, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации

An improper certificate validation vulnerability exists in curl <v8.1.0 in the way it supports matching of wildcard patterns when listed as "Subject Alternative Name" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with `xn--` and should not be allowed to pattern match, but the wildcard check in curl could still check for `x*`, which would match even though the IDN name most likely contained nothing even resembling an `x`.

Уязвимость утилиты командной строки cURL, связанная с ошибками процедуры подтверждения подлинности сертификата при сопоставлении подстановочных знаков в сертификатах TLS для имен IDN, позволяющая нарушителю выполнить атаку типа «человек посередине»

Moderate: curl security update

ELSA-2023-4523: curl security update (MODERATE)

Moderate: curl security and bug fix update

ELSA-2024-1601: curl security and bug fix update (MODERATE)

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