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Medium 6.5
MongoDB C Driver GridFS gap lets a shared writer recover a protected client's password
A memory-initialization flaw in the legacy GridFS file handling of the MongoDB C Driver can cause uninitialized process memory to be treated as valid file content and stored on the server. A database user holding ordinary write access to a shared storage area…
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Medium 4.0
Silent Decimal128 value corruption via incorrect exactness check in MongoDB C Driver
An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decim…
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Medium 6.2
Out-of-bounds read and write via undersized BSON buffer reservation in MongoDB C Driver
The BSON buffer-reservation API in the MongoDB C Driver can record a length smaller than the five-byte BSON minimum. Later append or comparison operations can underflow unsigned length calculations and read or write outside the document buffer. An actor who c…
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Medium 5.7
One-byte heap buffer overflow in BSON bulk document writer in MongoDB C Driver
An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embed…
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Medium 6.5
Heap buffer overflow via mid-scan command list growth in client topology monitoring
An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. Th…
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Medium 5.3
Integer Underflow → Heap Out-of-Bounds Read in `bson_new_from_buffer()
A missing lower-bound validation in the bson_new_from_buffer() function of libbson allows an integer underflow when processing BSON data with a zero-length prefix. The function reads a 32-bit document length from the input buffer but does not verify that the …
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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 4.3
bson_validate may skip validation when processing certain inputs
The bson_validate function may return early on specific inputs and incorrectly report success. This behavior could result in skipping validation for BSON data, allowing malformed or invalid UTF-8 sequences to bypass validation and be processed incorrectly. Th…
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Medium 6.5
Integer Overflow in GridFS chunkSize Leading to Heap Allocation Failure
User-controlled chunkSize metadata from MongoDB lacks appropriate validation allowing malformed GridFS metadata to overflow the bounding container.
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Medium 6.8
Bulk write with options may read invalid memory
A mongoc_bulk_operation_t may read invalid memory if large options are passed.
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Medium 5.3
MongoDB C Driver bson_string_append may be vulnerable to a buffer overflow
The bson_string_append function in MongoDB C Driver may be vulnerable to a buffer overflow where the function might attempt to allocate too small of buffer and may lead to memory corruption of neighbouring heap memory. This issue affects libbson versions prio…
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Medium 4.0
MongoDB C Driver bson_strfreev may be susceptible to integer overflow
The bson_strfreev function in the MongoDB C driver library may be susceptible to an integer overflow where the function will try to free memory at a negative offset. This may result in memory corruption. This issue affected libbson versions prior to 1.26.2
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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.
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Medium 4.2
Some MongoDB Drivers may publish events containing authentication-related data to a command listener configured by an application
Some MongoDB Drivers may erroneously publish events containing authentication-related data to a command listener configured by an application. The published events may contain security-sensitive data when specific authentication-related commands are executed.…