Multiple vulnerabilities in Adobe Reader and Acrobat



Published: 2021-06-08 | Updated: 2021-06-14
Risk High
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2021-28554
CVE-2021-28551
CVE-2021-28552
CVE-2021-28631
CVE-2021-28632
CWE-ID CWE-125
CWE-416
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 5 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU53921

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-28554

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a boundary condition when processing relative paths. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Adobe Reader: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.011.30156 - 2017.011.30196

Adobe Acrobat: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.008.30051 - 2017.011.30196


CPE2.3 External links

http://helpx.adobe.com/security/products/acrobat/apsb21-37.html
http://www.zerodayinitiative.com/advisories/ZDI-21-659/

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: #VU53922

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-28551

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

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 compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Adobe Reader: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.011.30156 - 2017.011.30196

Adobe Acrobat: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.008.30051 - 2017.011.30196


CPE2.3 External links

http://helpx.adobe.com/security/products/acrobat/apsb21-37.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: #VU53923

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-28552

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a boundary condition when processing XFA templates. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Adobe Reader: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.011.30156 - 2017.011.30196

Adobe Acrobat: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.008.30051 - 2017.011.30196


CPE2.3 External links

http://helpx.adobe.com/security/products/acrobat/apsb21-37.html
http://www.zerodayinitiative.com/advisories/ZDI-21-661/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

4) Use-after-free

EUVDB-ID: #VU53924

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-28631

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a boundary condition when processing AcroForm fields. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Adobe Reader: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.011.30156 - 2017.011.30196

Adobe Acrobat: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.008.30051 - 2017.011.30196


CPE2.3 External links

http://helpx.adobe.com/security/products/acrobat/apsb21-37.html
http://www.zerodayinitiative.com/advisories/ZDI-21-662/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

5) Use-after-free

EUVDB-ID: #VU53925

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-28632

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a boundary condition when processing AcroForm fields. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Adobe Reader: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.011.30156 - 2017.011.30196

Adobe Acrobat: 2021.001.20135 - 2021.001.20155, 2020.001.30020 - 2020.013.20074, 2017.008.30051 - 2017.011.30196


CPE2.3 External links

http://helpx.adobe.com/security/products/acrobat/apsb21-37.html
http://www.zerodayinitiative.com/advisories/ZDI-21-663/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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