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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.1084 CVE-2023-24998 Apache Tomcat - FileUpload DoS with excessive parts 21 February 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache Tomcat Publisher: Apache Operating System: UNIX variants (UNIX, Linux, OSX) Windows Resolution: Patch/Upgrade CVE Names: CVE-2023-24998 Original Bulletin: https://lists.apache.org/thread/mjz132oqypg39xlq3zydmgvbw2cg2slb Comment: CVSS (Max): None available when published - --------------------------BEGIN INCLUDED TEXT-------------------- Re-sending with corrected credit CVE-2023-24998 Apache Tomcat - FileUpload DoS with excessive parts Severity: Important Vendor: The Apache Software Foundation Versions Affected: Apache Tomcat 11.0.0-M1 Apache Tomcat 10.1.0-M1 to 10.1.4 Apache Tomcat 9.0.0-M1 to 9.0.70 Apache Tomcat 8.5.0 to 8.5.84 Description: Apache Tomcat uses a packaged renamed copy of Apache Commons FileUpload to provide the file upload functionality defined in the Jakarta Servlet specification. Apache Tomcat was, therefore, also vulnerable to the Apache Commons FileUpload vulnerability CVE-2023-24998 as there was no limit to the number of request parts processed. This resulted in the possibility of an attacker triggering a DoS with a malicious upload or series of uploads. Mitigation: Users of the affected versions should apply one of the following mitigations: - - Upgrade to Apache Tomcat 11.0.0-M3 or later when released - - Upgrade to Apache Tomcat 10.1.5 or later - - Upgrade to Apache Tomcat 9.0.71 or later - - Upgrade to Apache Tomcat 8.5.85 or later - - Note 11.0.0-M2 was not released Credit: This issue was identified by Jakob Ackermann History: 2023-01-03 Original advisory 2023-01-03 Corrected credit 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 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBY/Q4eskNZI30y1K9AQjcwA/+MGG4xiLI0b5LDopXIr7II+UDdVJYwJnC CHCkPgPYQHyPvZQvsraZfQJrxBIx+wEePQjBSG+MszvK8L9vnuwaAb2ebCbWnAya gQ/S4FUN2sCdMn+2+D5ITga4uu2Lem5fhp1Uqr3bYG2l4vUTjS+NXp42qiRcTfKW Z0V7fKulVHJWPd7mfPmV1u2aTuNFAHy/SG882OyPOXgbC2K8r/3398uVoWUHpyBi s8hHSWvGx2C/veipRe7Q9xNTF6ErMdx6rA9yOWiqGH0X4W5XSCT43IHHKGrWNoMD 6vZtEePYzcgkBwb+8ZtFn1vEFhWUS8SzKOfvJ5DOlnHszD7Tm/eu7mZh52ZqtX/a Wp9HeDT+31+Mvn2BeL/33DAJPNe0J3h+fjh8UjezA88S5qu3UMQPy8yJoxET88eI k5n0DKpMRl0gV8fuMbiqc8ZxXz2UQvWBKKXtIMZQmwGyRxNwaoAyVH8dnYz7rSkK IWKnrCOkpoShYnAuf8Zm2MSfBgGN6VRo6/zbqIG5eumLbJhxOnmp3vMG4WCOE+nu RH/LxQVocrAckDVvUEtOIlwg3FcwBcPs0KPLIAJJtDC7zrNV42cB6v2aGf+f6UDt BGoGIx3MfYfx+TL4S17dDFOq7wm4LhOv6qtosBC7B0T4xb3n8xzynT6vbI7suwmm 69lG1aJsY3E= =y/eI -----END PGP SIGNATURE-----