Headline
CVE-2021-44705: Adobe Security Bulletin
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a use-after-free vulnerability in the processing of Format event actions that could result in 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 update available for Adobe Acrobat and Reader | APSB22-01
Bulletin ID
Date Published
Priority
APSB22-01
January 11, 2022
2
Summary
Adobe has released security updates for Adobe Acrobat and Reader for Windows and macOS. These updates address multiple critical, important and moderate vulnerabilities. Successful exploitation could lead to arbitrary code execution, memory leak, application denial of service, security feature bypass and privilege escalation.
Affected Versions
Product
Track
Affected Versions
Platform
Acrobat DC
Continuous
21.007.20099 and earlier versions
Windows
Acrobat Reader DC
Continuous
21.007.20099 and earlier versions
Windows
Acrobat DC
Continuous
21.007.20099 and earlier versions
macOS
Acrobat Reader DC
Continuous
21.007.20099 and earlier versions
macOS
Acrobat 2020
Classic 2020
20.004.30017 and earlier versions
Windows & macOS
Acrobat Reader 2020
Classic 2020
20.004.30017 and earlier versions
Windows & macOS
Acrobat 2017
Classic 2017
17.011.30204 and earlier versions
Windows & macOS
Acrobat Reader 2017
Classic 2017
17.011.30204 and earlier versions
Windows & macOS
For questions regarding Acrobat DC, please visit the Acrobat DC FAQ page.
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:
Users can update their product installations manually by choosing Help > Check for Updates.
The products will update automatically, without requiring user intervention, when updates are detected.
The full Acrobat Reader installer can be downloaded from the Acrobat Reader Download Center.
For IT administrators (managed environments):
Refer to the specific release note version for links to installers.
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 Versions
Platform
Priority Rating
Availability
Acrobat DC
Continuous
21.011.20039
Windows and macOS
2
Release Notes
Acrobat Reader DC
Continuous
21.011.20039
Windows and macOS
2
Release Notes
Acrobat 2020
Classic 2020
20.004.30020
Windows and macOS
2
Release Notes
Acrobat Reader 2020
Classic 2020
20.004.30020
Windows and macOS
2
Release Notes
Acrobat 2017
Classic 2017
17.011.30207
Windows and macOS
2
Release Notes
Acrobat Reader 2017
Classic 2017
17.011.30207
Windows and macOS
2
Release Notes
Vulnerability Details
Vulnerability Category
Vulnerability Impact
Severity
CVSS base score
CVSS vector
CVE Number
Use After Free (CWE-416)
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-2021-44701
Information Exposure (CWE-200)
Privilege escalation
Moderate
3.1
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-44702
Stack-based Buffer Overflow (CWE-121)
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-2021-44703
Use After Free (CWE-416)
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-2021-44704
Access of Uninitialized Pointer (CWE-824)
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-2021-44705
Use After Free (CWE-416)
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-2021-44706
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-2021-44707
Heap-based Buffer Overflow (CWE-122)
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-2021-44708
Heap-based Buffer Overflow (CWE-122)
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-2021-44709
Use After Free (CWE-416)
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-2021-44710
Integer Overflow or Wraparound (CWE-190)
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-2021-44711
Improper Input Validation (CWE-20)
Application denial-of-service
Important
4.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
CVE-2021-44712
Use After Free (CWE-416)
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-2021-44713
Violation of Secure Design Principles (CWE-657)
Security feature bypass
Moderate
2.5
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-44714
Out-of-bounds Read (CWE-125)
Memory Leak
Moderate
3.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-44715
Information Exposure (CWE-200)
Privilege escalation
Moderate
3.1
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-44739
NULL Pointer Dereference (CWE-476)
Application denial-of-service
Moderate
3.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVE-2021-44740
NULL Pointer Dereference (CWE-476)
Application denial-of-service
Moderate
3.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVE-2021-44741
Out-of-bounds Read (CWE-125)
Memory Leak
Moderate
3.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-44742
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-2021-45060
Out-of-bounds Write (CWE-787)
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-2021-45061
Use After Free (CWE-416)
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-2021-45062
Use After Free (CWE-416)
Privilege escalation
Moderate
3.3
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE-2021-45063
Use After Free (CWE-416)
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-2021-45064
Access of Memory Location After End of Buffer (CWE-788)
Memory Leak
Important
5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2021-45067
Out-of-bounds Write (CWE-787)
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-2021-45068
Out-of-bounds Write (CWE-787)
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-2022-24092
Out-of-bounds Write (CWE-787)
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-2022-24091
Acknowledgements
Adobe would like to thank the following for reporting these issues and for working with Adobe to help protect our customers:
Ashfaq Ansari and Krishnakant Patil - HackSys Inc working with Trend Micro Zero Day Initiative (CVE-2021-44701)
j00sean (j00sean) (CVE-2021-44702, CVE-2021-44739)
Kai Lu of Zscaler’s ThreatLabz (CVE-2021-44703, CVE-2021-44708, CVE-2021-44709, CVE-2021-44740, CVE-2021-44741)
PangU via TianfuCup (CVE-2021-44704)
StakLeader via TianfuCup and Mat Powell of Trend Micro Zero Day Initiative (CVE-2021-44705)
bee13oy of Kunlun Lab via TianfuCup (CVE-2021-44706)
Vulnerability Research Institute Juvenile Via TianfuCup and Mat Powell of Trend Micro Zero Day Initiative
(CVE-2021-44707)Jaewon Min and Aleksandar Nikolic of Cisco Talos (CVE-2021-44710, CVE-2021-44711)
Sanjeev Das (sd001) (CVE-2021-44712)
Rocco Calvi (TecR0c) and Steven Seeley of Qihoo 360 (CVE-2021-44713, CVE-2021-44715)
chamal (chamal) (CVE-2021-44714)
fr0zenrain of Baidu Security (fr0zenrain) (CVE-2021-44742)
Anonymous working with Trend Micro Zero Day Initiative (CVE-2021-45060, CVE-2021-45061, CVE-2021-45062, CVE-2021-45063; CVE-2021-45068, CVE-2021-45064)
Ashfaq Ansari and Krishnakant Patil - HackSys Inc (CVE-2021-45067)
Mat Powell of Trend Micro Zero Day Initiative (CVE-2022-24092, CVE-2022-24091)
Revisions:
January 12, 2022: Updated acknowledgement for CVE-2021-44706
January 13, 2022: Updated acknowledgement for CVE-2021-45064, Updated CVE details for CVE-2021-44702 and CVE-2021-44739
January 17, 2022: Updated acknowledgement for CVE-2021-44706
January 27th, 2022: Updated acknowledgment for CVE-2021-45067
March 16, 2022: Added CVE details for CVE-2022-24091 and CVE-2022-24092
March 24, 2022: Updated acknowledgements for CVE-2022-44705 and CVE-2022-44707
For more information, visit https://helpx.adobe.com/security.html, or email [email protected].
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