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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2536 Security Bulletin: IBM QRadar SIEM is vulnerable to an XML External Entity Injection (XXE) attack (CVE-2021-20399) 27 July 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM QRadar SIEM Publisher: IBM Operating System: Linux variants Impact/Access: Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-20399 Original Bulletin: https://www.ibm.com/support/pages/node/6475263 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: IBM QRadar SIEM is vulnerable to an XML External Entity Injection (XXE) attack (CVE-2021-20399) Document Information Product: IBM QRadar SIEM Software version: 7.3, 7.4 Operating system(s): Linux Document number: 6475263 Modified date: 26 July 2021 Summary IBM QRadar SIEM is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. Vulnerability Details CVEID: CVE-2021-20399 DESCRIPTION: IBM QRadar is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. CVSS Base score: 7.1 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 196073 for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L) Affected Products and Versions IBM QRadar SIEM 7.3.0 to 7.3.3 Patch 8 IBM QRadar SIEM 7.4.0 to 7.4.3 GA Remediation/Fixes QRadar / QRM / QVM / QRIF / QNI 7.3.3 Patch 9 QRadar / QRM / QVM / QRIF / QNI 7.4.3 Patch 1 Workarounds and Mitigations None Acknowledgement John Zuccato, Rodney Ryan, Chris Shepherd, Vince Dragnea, Troy Fisher, Nathan Roane, Elaheh Samani and Gabor Minyo from IBM X-Force Ethical Hacking Team Change History 21 Jul 2021: Initial Publication - --------------------------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). 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