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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2087 APSB21-37 Security update available for Adobe Acrobat and Reader 10 June 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Acrobat Acrobat Reader Publisher: Adobe Operating System: Windows Mac OS Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-28632 CVE-2021-28631 CVE-2021-28554 CVE-2021-28552 CVE-2021-28551 Original Bulletin: https://helpx.adobe.com/security/products/acrobat/apsb21-37.html - --------------------------BEGIN INCLUDED TEXT-------------------- Security update available for Adobe Acrobat and Reader | APSB21-37 Bulletin ID Date Published Priority APSB21-37 June 08, 2021 2 Summary Adobe has released security updates for Adobe Acrobat and Reader for Windows and macOS. These updates address multiple critical vulnerabilities. Successful exploitation could lead to arbitrary code execution in the context of the current user. Affected Versions Product Track Affected Versions Platform Acrobat DC Continuous 2021.001.20155 and earlier Windows and versions macOS Acrobat Reader DC Continuous 2021.001.20155 and earlier Windows and versions macOS Acrobat 2020 Classic 2020.001.30025 and earlier Windows & macOS 2020 versions Acrobat Reader Classic 2020.001.30025 and earlier Windows & macOS 2020 2020 versions Acrobat 2017 Classic 2017.011.30196 and earlier Windows & macOS 2017 versions Acrobat Reader Classic 2017.011.30196 and earlier Windows & macOS 2017 2017 versions Solution Adobe recommends users update their software installations to the latest versions by following the instructions below. The latest product versions are available to end users via one of the following methods: o Users can update their product installations manually by choosing Help > Check for Updates. o The products will update automatically, without requiring user intervention, when updates are detected. o The full Acrobat Reader installer can be downloaded from the Acrobat Reader Download Center . For IT administrators (managed environments): o Refer to the specific release note version for links to installers. o Install updates via your preferred methodology, such as AIP-GPO, bootstrapper, SCUP/SCCM (Windows), or on macOS, Apple Remote Desktop and SSH. Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version: Product Track Updated Platform Priority Availability Versions Rating Acrobat DC Continuous 2021.005.20148 Windows and 2 Release macOS Notes Acrobat Reader Continuous 2021.005.20148 Windows and 2 Release DC macOS Notes Acrobat 2020 Classic 2020.004.30005 Windows and 2 Release 2020 macOS Notes Acrobat Reader Classic 2020.004.30005 Windows and 2 Release 2020 2020 macOS Notes Acrobat 2017 Classic 2017.011.30197 Windows and 2 Release 2017 macOS Notes Acrobat Reader Classic 2017.011.30197 Windows and 2 Release 2017 2017 macOS Notes Vulnerability Details +-------------+-------------+--------+-----+---------------+------------------+ | |Vulnerability| |CVSS | | | |Vulnerability| Impact |Severity|base | CVSS vector | CVE Number | | Category | | |score| | | +-------------+-------------+--------+-----+---------------+------------------+ |Out-of-bounds|Arbitrary | | |CVSS:3.1/AV:L/ |CVE-2021-28554 | |Read |code |Critical|7.8 |AC:L/PR:N/UI:R/| | | |execution | | |S:U/C:H/I:H/A:H|CVE-2021-28551 | |( CWE-125 ) | | | | | | +-------------+-------------+--------+-----+---------------+------------------+ |Use After | | | | |CVE-2021-28552 | |Free |Arbitrary | | |CVSS:3.1/AV:L/ | | | |code |Critical|7.8 |AC:L/PR:N/UI:R/|CVE-2021-28631 | |( CWE-416 ) |execution | | |S:U/C:H/I:H/A:H| | | | | | | |CVE-2021-28632 | +-------------+-------------+--------+-----+---------------+------------------+ Acknowledgements Adobe would like to thank the following for reporting the relevant issues and for working with Adobe to help protect our customers: o Mark Vincent Yason (@MarkYason) working with Trend Micro Zero Day Initiative (CVE-2021-28554, CVE-2021-28631, CVE-2021-28632) o Anonymous working with Trend Micro Zero Day Initiative (CVE-2021-28552) o qiaoli01 (CVE-2021-28551) For more information, visit https://helpx.adobe.com/security.html , or email PSIRT@adobe.com. - --------------------------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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