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Medium 4.7
Heap buffer overflow via wrapped size check during SASL username canonicalization in MongoDB C Driver
A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the applic…
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Medium 5.3
Silent field truncation via unchecked int cast of huge JSON string values in JSON-to-BSON parser
An incorrect numeric conversion in the JSON parsing component of the MongoDB C Driver's BSON library may cause an unusually large text value to be silently shortened, or the corresponding field to be omitted, while the parsing operation still reports success …
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Medium 5.9
Heap corruption via OCSP request double free from crafted multi-URL certificate in TLS client
A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be r…
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Medium 5.1
Heap write primitive via size round-up wrap during JSON parsing on 32-bit builds
An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated pa…
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Medium 5.4
Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C Driver
A weakness in the MongoDB C Driver allows special elements in caller-supplied database and collection name components to pass without sanitization when the driver composes the target namespace for an operation. An application that incorporates untrusted input…
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Medium 5.9
Heap memory out of bounds read and crash in C Driver legacy GridFS file reader
The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a divisio…
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Medium 5.3
MongoDB client C Driver may infinitely loop when validating certain BSON input data
When calling bson_utf8_validate on some inputs a loop with an exit condition that cannot be reached may occur, i.e. an infinite loop. This issue affects All MongoDB C Driver versions prior to versions 1.25.0.