Sensitive information sent insecurely In curl
Description
A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's 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.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Component | Affected version | Patched versions |
|---|---|---|---|
 alpine v3.20 | 8.1.0-r0 | ||
alpine v3.21 | 8.1.0-r0 | ||
alpine v3.16 | 8.1.0-r0 | ||
alpine v3.19 | 8.1.0-r0 | ||
 debian 12 | 7.88.1-10 | ||
debian 14 | 7.88.1-10 | ||
alpine v3.17 | 8.1.0-r0 | ||
alpine v3.22 | 8.1.0-r0 | ||
debian 13 | 7.88.1-10 | ||
alpine v3.15 | 8.1.0-r0 |
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Aliases
1. 2. 3. 4. 5. 6. 7.