Adobe Security Bulletin

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Security Updates Available for Adobe After Effects | APSB21-79

Bulletin ID	Date Published	Priority
ASPB21-79	October 26, 2021	3

Summary

Adobe has released an update for Adobe After Effects for Windows and macOS. This update addresses multiple critical and important vulnerabilities. Successful exploitation could lead to arbitrary code execution and application denial of service in the context of the current user.    

Affected Versions

Product	Version	Platform
Adobe After Effects	18.4.1 and earlier versions	Windows

Solution

Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version via the Creative Cloud desktop app’s update mechanism. For more information, please reference this help page.

Product	Version	Platform	Priority Rating	Availability
Adobe After Effects	22.0	Windows and macOS	3	Download Center
Adobe After Effects	18.4.2	Windows and macOS	3	Download Center

For managed environments, IT administrators can use the Admin Console to deploy Creative Cloud applications to end users. Refer to this help page for more information.

Vulnerability details

Vulnerability Category	Vulnerability Impact	Severity	CVSS base score	CVSS vector	CVE Numbers
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40751
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40752
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40753
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40754
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40755
NULL Pointer Dereference (CWE-476)	Application denial-of-service	Important	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	CVE-2021-40756
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40757
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40758
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40759
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-40760
NULL Pointer Dereference (CWE-476)	Application denial-of-service	Important	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	CVE-2021-40761

Acknowledgements

Adobe would like to thank the following researchers for reporting these issues and for working with Adobe to help protect our customers:  

(hy350) HY350 of Topsec Alpha Team CVE-2021-40761; CVE-2021-40756;
(yjdfy) CQY of Topsec Alpha Team CVE-2021-40760; CVE-2021-40759; CVE-2021-40758; CVE-2021-40757; CVE-2021-40755; CVE-2021-40753
(cff_123) CFF of Topsec Alpha Team CVE-2021-40751; CVE-2021-40752; CVE-2021-40754

Revisions

October 28, 2021: Added row to solution table for N-1.

For more information, visit https://helpx.adobe.com/security.html, or email PSIRT@adobe.com.