Headline
CVE-2021-43756: Adobe Security Bulletin
Adobe Media Encoder versions 22.0, 15.4.2 (and earlier) are affected by a memory corruption vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Security Updates Available for Adobe Media Encoder | APSB21-118
Bulletin ID
Date Published
Priority
APSB21-118
December 14, 2021
3
Summary
Adobe has released an update for Adobe Media Encoder. This update resolves critical and moderate vulnerabilities that could lead to arbitrary code execution and privilege escalation.
Affected Versions
Product
Version
Platform
Adobe Media Encoder
22.0 and earlier versions
Windows and macOS
Adobe Media Encoder
15.4.2 and earlier versions
Windows and macOS
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
Adobe Media Encoder
22.1.1
Windows and macOS
3
Adobe Media Encoder
15.4.3
Windows and macOS
3
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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2021-43756
Out-of-bounds Read (CWE-125)
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-2021-43757
Out-of-bounds Read (CWE-125)
Privilege escalation
Moderate
4.0
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-43758
Out-of-bounds Read (CWE-125)
Privilege escalation
Moderate
4.0
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-43759
Out-of-bounds Read (CWE-125)
Privilege escalation
Moderate
4.0
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-43760
Acknowledgments
Adobe would like to thank the following for reporting these issues and for working with Adobe to help protect our customers:
- Mat Powell of Trend Micro Zero Day Initiative (CVE-2021-43757, CVE-2021-43758, CVE-2021-43759, CVE-2021-43760)
- (yjdfy) CQY of Topsec Alpha Team (CVE-2021-43756)
For more information, visit https://helpx.adobe.com/security.html, or email [email protected]