| Package | Affected versions | Patched versions |
|---|---|---|
| c driver | ≥ 2.1.0, < 2.1.2 | 2.1.2 |
The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authentication or network traffic. This may be triggered by passing untrusted input in the username of a MongoDB URI with authMechanism=GSSAPI.
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