KMS request injection via unsanitized key vault and provider values in libmongocrypt

libmongocrypt builds requests to external key management services AWS, Azure and GCP by inserting values from key vault documents, KMS provider configuration and KMS responses into request lines, headers and signed request bodies without validating or encoding them for each context. A user with...

BSON output corruption via out-of-range binary subtype bypassing UUID and OldBinary guards

A numeric-type conversion flaw in the BSON handling library of the MongoDB C Driver allows an out-of-range binary subtype value supplied through untrusted textual input to bypass the library's binary-element integrity checks. When such a value is later encoded, it is narrowed to a smaller wire...

Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builder

A client-side encryption schema construction component in the MongoDB C Driver places caller-supplied field identifiers into a position that is interpreted as a pattern expression, without normalizing or validating them. As a result, an application that designates certain fields for client-side...

Update operator injection via single-element list rewriting in the update builder

A data-query-logic neutralization weakness in the update-statement construction component of the MongoDB C Driver can cause application-supplied values to be interpreted as query/update logic rather than as literal data. An application user who can influence the content of values that the...

Cross-document data leak via malformed BSON array parsing in reused thread buffer

A memory-handling weakness in the BSON deserialization component of the MongoDB C Driver may cause data left over from previously processed content to be returned when specially crafted serialized input is parsed. An unauthenticated party able to supply serialized data to an application that maps...

Plaintext exposure of encrypted fields via ANSI code-page corruption of database name

A flaw in the client-side encryption support of the MongoDB .NET/C driver can cause data designated for client-side field-level encryption to be written without encryption. Under certain platform text-encoding configurations, an internal name conversion loses information, so the encryption layer...

Authentication bypass via issuer-and-serial-only certificate equality in shared cluster cache

The MongoDB C Driver compares TLS client certificates by issuer and serial number only when deciding whether two clients can share cached connections. In an application that creates clients from certificates supplied by different users, a user who provides a certificate copying another user's...

NoSQL injection via dot and dollar characters in LINQ filter field names and dictionary keys

The MongoDB C Driver does not neutralize dot and dollar characters in dictionary keys, field names and array-filter identifiers used in LINQ queries before placing them into the field paths it sends to the server. An application user whose input reaches these positions can redirect a query or...

NoSQL operator injection via unvalidated replacement document in findOneAndReplace

The MongoDB C Driver does not reject replacement documents whose top-level field names begin with a dollar sign in FindOneAndReplace, unlike other replace operations. An application that builds such a document from user-supplied field names can have the server apply update operators instead of a...

NoSQL command injection via mismatched raw BSON length prefix written verbatim to the wire

A data-validation flaw exists in the BSON handling and binary serialization path of the MongoDB C Driver. When an application constructs a raw or lazy BSON document object from externally supplied binary data, the driver does not verify that the size quantity declared inside that data matches the...

Heap overflow via 32-bit length wrap of the URI username in Windows Kerberos auth message wrapping

A 32-bit integer wraparound in the MongoDB C Driver's Windows-only Kerberos/SSPI authentication code can cause an undersized heap buffer to be allocated when an excessively long credential value is supplied in the client's connection configuration. A party able to control that client-side...

Memory-exhaustion denial of service via unbounded symbol interning during BSON/JSON deserialization

The MongoDB C Driver's BSON library contains an uncontrolled resource consumption weakness in its deserialization handling of one BSON value type. An application that deserializes untrusted content with the library retains data derived from that content for the lifetime of the process, with no...

Duplicate geometry fields via unvalidated GeoJSON extra members

The MongoDB C Driver writes GeoJSON extra members without checking whether their names collide with reserved GeoJSON members such as type and coordinates. An application that places user-supplied field names into these extra members can store documents with duplicate geometry fields, so the serve...

Improper Encoding of Server-Supplied JavaScript Values in MongoDB Compass BSON Parsing

MongoDB Compass improperly escapes certain BSON values when converting a stored view’s aggregation pipeline into editable source. When a user connects to a MongoDB deployment containing a specially crafted view and opens that view for editing, the values can cause arbitrary code to execute with t...

Unbounded Recursion in phongo_bson_visit_document/visit_array:

An uncontrolled recursion weakness in the BSON decoding logic of the MongoDB PHP driver may allow an unauthenticated party who can supply crafted binary document data to the decoder to exhaust the process stack. This may cause the PHP process using the driver to terminate unexpectedly, resulting ...

Incorrect authorization in MongoDB Server router for bulk writes to system namespaces

A security issue was discovered in MongoDB mongos the sharded cluster router where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization...

Collection validators using collation-accepting expressions can crash MongoDB Server on insert

MongoDB Server's collection validation feature may not properly handle certain expressions stored in a validator. In some cases, this can cause the server process to stop running when a document is later inserted. The behavior can occur for authenticated users with write access...

Fixed values in MongoDB Server $bucket stage may be misread as field references

An issue in MongoDB Server's aggregation framework can cause certain constant values to be handled incorrectly during internal query rewriting. Under certain conditions, an authenticated user with read access may receive field values in aggregation output that the query did not intend to return...

Missing Authorization Check on Internal Aggregation Stage in MongoDB Server mongos Leads to Denial of Service

A security issue was discovered in MongoDB mongos the sharded cluster router where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization...

MongoDB Server may disclose process memory via a crafted `$_internalApplyOplogUpdate` aggregation pipeline

Use of freed memory in the aggregation feature of MongoDB Server can cause the server to read data from a memory area after it has been released. When an internal aggregation stage is combined with a batch size of 0, the server may read from memory that is no longer in use. Because that memory ca...

Ops Manager Sensitive MFA Enrollment Information Exposure in User Listings

An authenticated Ops Manager organization member can retrieve another member's pending authenticator enrollment seed through user-listing endpoints while that member's enrollment is unconfirmed. This results in disclosure of secret authentication material to another member of the same organizatio...

Ops Manager Improper Authorization in Daily Host Monitoring Retrieval

An authenticated Ops Manager user with a read-only project role can retrieve a daily host monitoring record associated with a different project when they possess the required record identifier. Insufficient ownership validation can expose deployment metadata, including host and configuration...

Ops Manager Uncontrolled Resource Consumption in Monitoring Endpoints

An unauthenticated user with network access to the Ops Manager web port can repeatedly request monitoring endpoints that perform costly work without rate limiting. This can temporarily slow other traffic served by the same process while requests continue...

Application denial of service via out-of-bounds read in BSON Regex decoding in MongoDB Python Driver

The MongoDB Python Driver's binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decodeall API can cause the application proce...

Application denial of service and data truncation via unchecked BSON append failures in MongoDB PHP Driver

The BSON encoder in the MongoDB PHP Driver does not check some return values after a document exceeds libbson's size limit. This can leave the encoder in an invalid state. An unauthenticated actor who can cause an affected application to encode an unusually large data structure can terminate the...

Heap buffer overflow via 32-bit string-length truncation in MongoDB PHP Driver

The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation. When an affected application encodes a string near 4 GiB, the allocation size can wrap while the copy operation uses the original length. The resulting heap buffer overflow can corrupt proces...

Application denial of service via missing BSON array length validation in MongoDB Go Driver

Improper validation of a BSON array length in the MongoDB Go Driver can cause an out-of-bounds index and runtime panic when an application calls bson.RawArray.Validate or bsoncore.Array.Validate on a malformed four-byte array. An unauthenticated actor who can supply raw BSON array data to an...

Application denial of service via integer overflow in BSON value-length validation in MongoDB Go Driver

An integer overflow in BSON value-length handling in the MongoDB Go Driver can cause a runtime panic when an application validates or accesses a malformed BSON document. An unauthenticated actor who can supply BSON bytes to an affected application may terminate an unprotected application process,...

Unrecognized payload acceptance in explicit decryption in MongoDB libmongocrypt

The explicit decryption component of MongoDB libmongocrypt can return an unrecognized encrypted payload unchanged instead of returning a decryption error. An actor who can modify stored encrypted fields, such as a database writer, server, or network intermediary, can cause an affected application...

Heap corruption via duplicate masterKey fields in MongoDB libmongocrypt

Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document,...

Application denial of service via malformed KMS endpoint in MongoDB libmongocrypt

An integer underflow in the KMS endpoint-parsing logic of MongoDB libmongocrypt can cause an allocation failure that terminates the application process. This can occur when an authenticated user modifies a key document in the key vault collection, or when an application accepts a KMS endpoint...

Query and rename target confusion via embedded NUL truncation in MongoDB C++ Driver

The MongoDB C++ Driver discards content after an embedded NUL byte in certain field and collection names accepted by the collection API. This can cause the driver and the calling application to interpret the same name differently. An authenticated actor who can influence a name passed by an...

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 decimal string to an embedding application,...

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 can influence the length supplied by an...

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 embedding application can corrupt adjacent...

Out-of-bounds read in SCRAM response parsing in MongoDB C Driver

An out-of-bounds read in SCRAM authentication response parsing in the MongoDB C Driver can read one byte beyond a fixed-size buffer when processing a malformed server-final message. A server or network intermediary able to provide this message before server-signature verification can cause the...

Improper validation of Ops Manager configuration in MongoDB Kubernetes Operator

In MongoDB Controllers for Kubernetes, insufficient validation of Ops Manager backup configuration may allow a user who can modify an OpsManager custom resource to cause unintended administrative changes in Ops Manager. This affects deployments using Enterprise Ops Manager backup reconciliation...

Heap out-of-bounds write via signed size overflow in BSON document encoding

An integer overflow in the BSON document encoding component of the MongoDB Python Driver's bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch...

Connection redirection via percent-encoded delimiter injection in connection string hosts

PyMongo's connection string parsing decodes percent-encoded characters in the host portion before the host list is separated on its delimiters. When an application places a hostname value supplied by an unauthenticated party into a connection string, that party may cause additional servers of the...

Forced local Unix socket connection via dot-sock KMS endpoint in client-side field encryption

The client-side field level encryption support in the MongoDB Python Driver can treat a key management endpoint value ending in ".sock" as a local Unix domain socket path rather than a remote host. A user with write access to the encryption key metadata stored in the database can cause an...

PHP object injection via unsuppressible __pclass class inference in command monitoring events

Deserialization of untrusted data in the command monitoring support of the MongoDB PHP Driver can cause class names embedded in document content to be honored when the driver builds monitoring event objects. When an application registers a command monitoring subscriber and includes untrusted data...

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. This may cause the application using the...

Shell script injection via server-supplied database name in Open MongoDB shell

MongoDB Compass can interpolate a database name without escaping into the initial input of its embedded MongoDB shell when a user opens the shell from that database's view. A user with privileges to create databases on a server that a Compass user connects to may, under specific conditions, have...

Unauthorized cache lock takeover via expression injection in lock owner values in MongoDB integration for Laravel

Improper neutralization of special elements in data query logic in the cache lock implementation of the MongoDB integration for Laravel can cause a caller-supplied lock owner value to be evaluated as an aggregation expression rather than as a literal value. An authenticated user who can influence...

Server-side JavaScript injection via string query criteria bypassing the strict operator allowlist

Mongoid does not neutralize a string-typed query criterion supplied to its query builder, and instead passes it to the database as a server-side JavaScript expression. An unauthenticated party able to influence the value an application supplies as a query argument may cause code of their choosing...

NoSQL injection of JavaScript-executing query operators via unsafe-by-default operator guard

Mongoid does not restrict which query operators may come from caller-supplied filter data when an application hands that data to its query-building methods. In an application that forwards externally supplied filter parameters in this way, a party with no credentials may influence how the databas...

Denial of service via unbounded regex matching in Mongoid's in-memory query matcher

An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated party to cause excessive processing within an embedding application process. Applications that place user-supplied text into a pattern-matching query...

Data deletion and attribute disclosure via field-name method injection in in-memory queries

Mongoid contains an unsafe reflection weakness in the query path used for embedded documents. An application that passes an externally supplied field name to certain in-memory query methods may allow an unauthenticated party to obtain unintended disclosure of stored document data and to permanent...

Silent plaintext persistence via unresolved callable database name in encryption schema map

A protection mechanism failure in the object-document mapper's encryption configuration generation can cause fields that an application declared for client-side field-level encryption to be written and kept in cleartext, without any error or warning. A party holding ordinary read access to the...

Plaintext storage of encrypted fields via skipped embedded models in encryption schema generation

Mongoid may omit encryption rules for fields declared on embedded models when generating the client-side field-level encryption schema. Applications that enable this feature can therefore store values intended to be encrypted in readable form, with no error or warning. A party with routine read...