CVE-2023-28322 Information

Description

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.

Reference

https://hackerone.com/reports/1954658 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.