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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0186 Apache Tomcat Information Disclosure 15 January 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache Tomcat Publisher: Apache Operating System: Windows Impact/Access: Access Confidential Data -- Unknown/Unspecified Reduced Security -- Unknown/Unspecified Resolution: Patch/Upgrade CVE Names: CVE-2021-24122 Original Bulletin: https://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52%40%3Cannounce.tomcat.apache.org%3E - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2021-24122 Apache Tomcat Information Disclosure Severity: Important Vendor: The Apache Software Foundation Versions Affected: Apache Tomcat 10.0.0-M1 to 10.0.0-M9 Apache Tomcat 9.0.0.M1 to 9.0.39 Apache Tomcat 8.5.0 to 8.5.59 Apache Tomcat 7.0.0 to 7.0.106 Description: When serving resources from a network location using the NTFS file system it was possible to bypass security constraints and/or view the source code for JSPs in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances. Mitigation: Users of the affected versions should apply one of the following mitigations: - - Upgrade to Apache Tomcat 10.0.0-M10 or later - - Upgrade to Apache Tomcat 9.0.40 or later - - Upgrade to Apache Tomcat 8.5.60 or later - - Upgrade to Apache Tomcat 7.0.107 or later Credit: This issue was identified by Ilja Brander. History: 2021-01-14 Original advisory References: [1] https://tomcat.apache.org/security-10.html [2] https://tomcat.apache.org/security-9.html [3] https://tomcat.apache.org/security-8.html [4] https://tomcat.apache.org/security-7.html - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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