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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.0789 Security Bulletin: IBM WebSphere Application Server is vulnerable to remote code execution due to Dojo (CVE-2021-23450) 23 February 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: WebSphere Application Server Publisher: IBM Operating System: AIX HP-UX IBM i Linux variants Solaris Windows z/OS Mac OS Resolution: None CVE Names: CVE-2021-23450 Original Bulletin: https://www.ibm.com/support/pages/node/6558594 Comment: CVSS (Max): 9.8 CVE-2021-23450 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: IBM Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- IBM WebSphere Application Server is vulnerable to remote code execution due to Dojo (CVE-2021-23450) Document Information Document number : 6558594 Modified date : 22 February 2022 Product : WebSphere Application Server Component : Liberty Software version : 7.0, 8.0, 8.5, 9.0, Liberty Operating system(s): AIX HP-UX IBM i Linux Solaris Windows z/OS Mac OS Edition : Advanced,Base,Developer,Enterprise,Express,Network Deployment,Single Server,Liberty Summary There is a vulnerability in the Dojo library used by IBM WebSphere Application Server traditional in the Admin Console and used by the IBM WebSphere Application Server Liberty with the adminCenter-1.0 feature enabled. This has been addressed. Vulnerability Details CVEID: CVE-2021-23450 DESCRIPTION: Dojo could allow a remote attacker to execute arbitrary code on the system, caused by a prototype pollution in the setObject function. By sending a specially-crafted reuqest, an attacker could exploit this vulnerability to execute arbitrary code on the system. CVSS Base score: 9.8 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 216463 for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) Affected Products and Versions +----------------------------------------+-------------------+ |Affected Product(s) |Version(s) | +----------------------------------------+-------------------+ |IBM WebSphere Application Server Liberty|17.0.0.3 - 22.0.0.2| +----------------------------------------+-------------------+ |IBM WebSphere Application Server |9.0 | +----------------------------------------+-------------------+ |IBM WebSphere Application Server |8.5 | +----------------------------------------+-------------------+ |IBM WebSphere Application Server |8.0 | +----------------------------------------+-------------------+ |IBM WebSphere Application Server |7.0 | +----------------------------------------+-------------------+ Remediation/Fixes IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the APAR PH43148 or APAR PH43817. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature . For IBM WebSphere Application Server Liberty 17.0.0.3 - 22.0.0.2 using the adminCenter-1.0 feature: . Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH43817 - --OR-- . Apply Fix Pack 22.0.0.3 or later (targeted availability 1Q2022). For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.11: . Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH43148 - --OR-- . Apply Fix Pack 9.0.5.12 or later (targeted availability 2Q2022). For V8.5.0.0 through 8.5.5.21: . Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH43148 - --OR-- . Apply Fix Pack 8.5.5.22 or later (targeted availability 3Q2022). For V8.0.0.0 through 8.0.0.15: . Upgrade to 8.0.0.15 and then apply Interim Fix PH43148 For V7.0.0.0 through 7.0.0.45: . Upgrade to 7.0.0.45 and then apply Interim Fix PH43148 Additional interim fixes may be available and linked off the interim fix download page. IBM WebSphere Application Server V7.0 and V8.0 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product. Workarounds and Mitigations None To determine if a feature is enabled for WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature . Change History 22 Feb 2022: 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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