CVE-2021-21290Medium· 6.2▾ SunlitNetty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-lik…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 34.1 · likelihood 0.4 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
1.8%
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method "File.createTempFile" on unix-like systems creates a random file, but, by default will create this file with the permissions "-rw-r--r--". Thus, if sensitive information is written to this file, other local users can read this information. This is the case in netty's "AbstractDiskHttpData" is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own "java.io.tmpdir" when you start the JVM or use "DefaultHttpDataFactory.setBaseDir(...)" to set the directory to something that is only readable by the current user.
netty < 4.1.59debian_linux = 9.0debian_linux = 10.0quarkus <= 1.13.7banking_corporate_lending_process_management = 14.2.0banking_corporate_lending_process_management = 14.3.0banking_corporate_lending_process_management = 14.5.0banking_credit_facilities_process_management = 14.2.0banking_credit_facilities_process_management = 14.3.0banking_credit_facilities_process_management = 14.5.0banking_trade_finance_process_management = 14.2.0banking_trade_finance_process_management = 14.3.0banking_trade_finance_process_management = 14.5.0communications_brm_-_elastic_charging_engine = 12.0.0.3communications_design_studio = 7.4.2communications_messaging_server = 8.1nosql_database < 20.3active_iq_unified_managercloud_secure_agentsnapcenterUpgrade past the affected range:
netty 4.1.59nosql_database 20.3Connected by shared product, vendor, weakness, or advisory.
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