Security Advisory

CVE-2023-28319

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-05-26 00:00:00

Last updated 2025-01-15 16:00:16

Assigner hackerone

State PUBLISHED

Description

A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH servers public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.

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