Adobe Security Bulletin

Last updated on Nov 12, 2021 09:49:12 AM GMT

Security Updates Available for Adobe After Effects | APSB21-54

Bulletin ID	Date Published	Priority
ASPB21-54	July 20, 2021	3

Summary

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

Affected Versions

Product	Version	Platform
Adobe After Effects	18.2.1 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	18.4	Windows and macOS	3	Download Center
Adobe After Effects	17.7.1	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.

Note:

CVE-2021-35996 is resolved in Adobe After Effects version 18.4 and later.

Vulnerability details

Vulnerability Category	Vulnerability Impact	Severity	CVSS base score	CVSS vector	CVE Numbers
Out-of-bounds Read (CWE-125)	Arbitrary file system read	Moderate	3.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	CVE-2021-36018 CVE-2021-36019
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-2021-36017
Out-of-bounds Write (CWE-787)	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-2021-35993 CVE-2021-35994
Improper Input Validation (CWE-20)	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-2021-35995
Access of Memory Location After End of Buffer (CWE-788)	Arbitrary code execution	Critical	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE-2021-35996

Acknowledgements

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

CQY of Topsec Alpha Team (yjdfy) (CVE-2021-35996)
Mat Powell (@mrpowell) & Joshua Smith (@kernelsmith) of Trend Micro Zero Day Initiative (CVE-2021-35994, CVE-2021-35993)
Mat Powell of Trend Micro Zero Day Initiative (CVE-2021-35995, CVE-2021-36017, CVE-2021-36018) 
Qiao Li Of Baidu Security Lab working with Trend Micro Zero Day Initiative (CVE-2021-36019)

Revisions

August 03, 2021: Updated acknowledgements for CVE-2021-35993

October 15, 2021: Added row for the N-1 version.

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