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Amazon CodeGuruDetector Library

Security detectors

Reflected cross site scripting

Rule to detect reflected XSS.

Unrestricted upload of dangerous file type

Insufficiently restrictive file uploads can lead to inadvertently running malicious code.

Untrusted AMI images

Improper filtering of Amazon Machine Images (AMIs) can result in loading an untrusted image, a potential security vulnerability.

Insecure SAML parser configuration

Comment parsing for OpenSAML2 might enable an attacker to bypass authentication.

Cross-site request forgery

Insecure configuration can lead to a cross-site request forgery (CRSF) vulnerability.

Case sensitive keys in S3 object user metadata

User metadata keys are case insensitive and are returned as lowercase strings, even if they were originally specified with uppercase strings.

Unspecified default value

Unspecified defaults can cause your application to crash.

Device Permission Usage.

Do not use API that requests system permission directly. Please onboard mShop Permission Service first.

Deserialization of untrusted object

Deserialization of untrusted objects can lead to security vulnerabilities such as, inadvertently running remote code.

Stack trace not included in re-thrown exception

When re-throwing an exception, make sure to include the stack trace.

Missing check on the value returned by moveToFirst API

Missing check on the value returned by moveToFirst API can cause your application to crash.

Overflow when deserializing relational database objects

Deserializing objects from relational databases should allocate a 64-bit, not 32-bit, type for the auto-incremented identifier.

Insufficient number of PBEKeySpec iterations

Using less than 1,000 PBEKeySpec iterations is insecure.

URL redirection to untrusted site

User-controlled input that specifies a link to an external site could lead to phishing attacks and allow user credentials to be stolen.

Use of externally-controlled input to select classes or code

Use of unsanitized external input in reflection can allow attackers to bypass security checks and run malicious code.

Insecure connection using unencrypted protocol

Connections that use insecure protocols transmit data in cleartext, which can leak sensitive information.

Missing encryption of sensitive data in storage

Sensitive data is potentially persisted into storage or passed to another service without always being encrypted.

Inefficient additional authenticated data (AAD) authenticity

Encryption can be improved by using Additional authenticated data (AAD).

Ignored output of DynamoDBMapper operations

Check if errors are returned by DynamoDBMapper's BatchWrite operations.

Error-prone AWS IAM policy creation

Manually creating text-based IAM policies is error-prone.

Use of externally-controlled input to build connection string

Use of unsanitized user input to build connection strings can allow attackers to bypass security checks and access restricted resources.

Null pointer dereference

Dereferencing a null pointer can lead to unexpected null pointer exceptions.

Cross-site scripting

Relying on potentially untrusted user inputs when constructing web application outputs can lead to cross-site scripting vulnerabilities.

Unauthenticated LDAP requests

Unauthenticated LDAP requests can allow untrusted access to LDAP servers.

Mutually exclusive call

Calls to mutually exclusive methods were found in the code.

AWS Lambda client not reused

Reuse AWS clients in Lambda.

Atomicity violation

Atomicity violations caused by improper usage of ConcurrentHashMap or ConcurrentLinkedQueue can result in crashses or incorrect program results.

Missing check on the result of createNewFile

Missing check on the result of createNewFile might cause data loss.

Missing handling of specifically-thrown exceptions

Catching generic exceptions might hide issues when specific exceptions are thrown.

Sensitive data stored unencrypted due to partial encryption

Encryption that is dependent on conditional logic, such as an if...then clause, might cause unencrypted sensitive data to be stored.

Weak obfuscation of web request

Weak obfuscation while configuring a web request

Clear text credentials

Credentials that are stored in clear text can be intercepted by a malicious actor.

Unexpected re-assignment of synchronized objects

Synchronized objects should not be re-assigned in the same synchronized block because the references to the synchronized object would be lost.

Session fixation

Session fixation might allow an attacker to steal authenticated session IDs.

XPath injection

Potentially unsanitized user input in XPath queries can allow an attacker to control the query in unwanted or insecure ways.

Catching and not re-throwing or logging exceptions

It's not good practice to catch an exception and then re-throw or log it.

Missing check when launching an Android activity with an implicit intent

Your application can crash if the check for an application that can receive the implicit intent is missing from code.

AWS client not reused in a Lambda function

Recreating AWS clients in each Lambda function invocation is expensive.

Arithmetic overflow or underflow

Use numeric types that are large enough to hold the result of arithmetic operations.

Loose file permissions

Weak file permissions can lead to privilege escalation.

Insecure temporary file or directory

Insecure ways of creating temporary files and directories can lead to race conditions, privilege escalation, and other security vulnerabilities.

HTTP response splitting

Passing data from an untrusted source into a cookie or web response might expose the user to HTTP response splitting attacks.

Input and output values become out of sync

If a method that uses an input parameter to update an output value throws an exception, then the output value is not updated.

Server-side request forgery

Insufficient sanitization of potentially untrusted URLs on the server side can allow server requests to unwanted destinations.

OS command injection

Constructing operating system or shell commands with unsanitized user input can lead to inadvertently running malicious code.

Missing Authorization for address id

Rule to detect lack of authorization check when using address ID.

Concurrency deadlock

Improper use of locks in a multi-threaded program can lead to deadlock and cause the program to be unresponsive.

SQL injection

Use of untrusted inputs in SQL database query can enable attackers to read, modify, or delete sensitive data in the database

Path traversal

Creating file paths from untrusted input might give a malicious actor access to sensitive files.

Override of reserved variable names in a Lambda function

Overriding environment variables that are reserved by AWS Lambda might lead to unexpected behavior.

Usage of an API that is not recommended

APIs that are not recommended were found.

Missing pagination

Additional results are not checked for a paginated API call. This might produce inaccurate results.

Hardcoded credentials

Hardcoded credentials can be intercepted by malicious actors.

Insecure JSON web token (JWT) parsing

JWTs should not be parsed using the parse method.

Not calling finalize causes skipped cleanup steps

Always call super.finalize explicitly.

Unchecked S3 object metadata content length

Failure to specify a content length causes the contents of the input stream to buffer locally in memory in order to calculate its length. This can result in performance problems.

Untrusted data in security decision

Security decisions should not depend on branching that can be influenced by untrusted or client-provided data.

Permissive cors configuration rule

Rule to enable detection for potential CORS vulnerabilities in services using the Coral or Spring frameworks.

Insecure cookie

Insecure cookies can lead to unencrypted transmission of sensitive data.

Resources used by an Amazon S3 TransferManager are not released

Call ShutdownNow when you use TransferManager to manage transfers to Amazon S3.

Insecure cryptography

Weak, broken, or misconfigured cryptography can lead to security vulnerabilities.

Resource leak

Allocated resources are not released properly.

Missing timezone of SimpleDateFormat

Using a SimpleDateFormat object without setting its timezone can result in unexpected date and time.

XML External Entity

Objects that parse or handle XML can lead to XML External Entity (XXE) attacks when misconfigured.

Bad parameters used with AWS API methods

An outdated or bad parameters were detected in calls to some AWS API methods.

LDAP injection

LDAP queries that rely on potentially untrusted inputs can allow attackers to read or modify sensitive data, run code, and perform other unwanted actions.

Avoid reset exception in Amazon S3

Uploading objects to Amazon S3 by using streams (either through an AmazonS3 client or TransferManager) might encounter network connectivity or timeout issues.

Insecure hashing

Obsolete, broken, or weak hashing algorithms can lead to security vulnerabilities.

Missing S3 bucket owner condition

Not setting the S3 bucket owner condition might introduce a risk of accidentally using a wrong bucket.

Log injection

Using untrusted inputs in a log statement can enable attackers to break the log's format, forge log entries, and bypass log monitors.

Sensitive information leak

Sensitive information should not be exposed through log files or stack traces.

XML External Entity Document Builder Factory

Objects that parse or handle XML in XML document can lead to XML External Entity (XXE) attacks when misconfigured.

Object Input Stream Insecure Deserialization

Deserialization of untrusted data without sufficiently verifying that the resulting data will be valid.

Weak pseudorandom number generation

Insufficiently random generators (or hardcoded seeds) can make pseudorandom sequences predictable.

Insecure CORS policy

Cross-Origin Resource Sharing policies that are too permissive may lead to security vulnerabilities.

Missing check on the value returned by ResultSet.next

Missing check on the value returned by ResultSet.next can cause your application to crash.

Insecure TLS version

TLS versions older than TLS version 1.1 support weak, broken, or misconfigured cryptography.

Missing handling of file deletion result

Unhandled failures of deleting files can exhaust file handles.

Client-side KMS reencryption

Client-side decryption followed by reencryption is inefficient and can lead to sensitive data leaks.

Unsanitized input is run as code

Scripts generated from unsanitized inputs can lead to malicious behavior and inadvertently running code remotely.