Multiple vulnerabilities in Adobe Acrobat and Reader
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2021-40728 CVE-2021-40729 CVE-2021-40730 CVE-2021-40731 |
| CWE-ID | CWE-416 CWE-125 CWE-787 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Adobe Reader Client/Desktop applications / Office applications Adobe Acrobat Client/Desktop applications / Office applications |
| Vendor | Adobe |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU57297
Risk: High
CVSSv3.1:
CVE-ID: CVE-2021-40728
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsAdobe Reader: 21.001.20135 - 2020.013.20074
Adobe Acrobat: 17.008.30051 - 21.007.20096
Fixed software versionsCPE2.3 External links
http://helpx.adobe.com/security/products/acrobat/apsb21-104.html
Q & A
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?
2) Out-of-bounds read
EUVDB-ID: #VU57301
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-40729
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsAdobe Reader: 21.001.20135 - 2020.013.20074
Adobe Acrobat: 17.008.30051 - 21.007.20096
Fixed software versionsCPE2.3 External links
http://helpx.adobe.com/security/products/acrobat/apsb21-104.html
Q & A
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?
3) Use-after-free
EUVDB-ID: #VU57299
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-40730
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a use-after-free error when processing JPG2000 images inside a PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and read contents of memory on the system.
Install updates from vendor's website.
Vulnerable software versionsAdobe Reader: 21.001.20135 - 2020.013.20074
Adobe Acrobat: 17.008.30051 - 21.007.20096
Fixed software versionsCPE2.3 External links
http://helpx.adobe.com/security/products/acrobat/apsb21-104.html
http://www.zerodayinitiative.com/advisories/ZDI-21-1162/
Q & A
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?
4) Out-of-bounds write
EUVDB-ID: #VU57303
Risk: High
CVSSv3.1:
CVE-ID: CVE-2021-40731
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing JPG2000 images inside a PDF file. A remote attacker can create a specially crafted PDF file, trick the victim into opening it using the affected software, trigger an out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsAdobe Reader: 21.001.20135 - 2020.013.20074
Adobe Acrobat: 17.008.30051 - 21.007.20096
Fixed software versionsCPE2.3 External links
http://helpx.adobe.com/security/products/acrobat/apsb21-104.html
http://www.zerodayinitiative.com/advisories/ZDI-21-1163/
Q & A
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?
