2021-21290 | Oracle PeopleSoft Enterprise PeopleTools Netty information disclosure
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A vulnerability was found in Oracle PeopleSoft Enterprise PeopleTools 8.57/8.58/8.59 (Enterprise Resource Planning Software). It has been declared as critical. This vulnerability affects some unknown processing of the component Netty. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. As an impact it is known to affect confidentiality. CVE summarizes:
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.
The weakness was released 07/20/2021 as Oracle Critical Patch Update Advisory – July 2021. The advisory is available at oracle.com. This vulnerability was named CVE-2021-21290 since 12/22/2020. The exploitation appears to be easy. Local access is required to approach this attack. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/25/2021).
Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3
Status: Not defined
12/22/2020 CVE assigned
07/20/2021 +209 days Advisory disclosed
07/20/2021 +0 days Countermeasure disclosed
07/21/2021 +1 days VulDB entry created
07/25/2021 +4 days VulDB last updateVendor: https://www.oracle.com
Created: 07/21/2021 10:37
Updated: 07/25/2021 09:52
Changes: (3) source_cve_assigned source_cve_nvd_summary advisory_confirm_url
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