Multiple vulnerabilities in Adobe Digital Editions
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-39828 CVE-2021-39827 CVE-2021-39826 |
| CWE-ID | CWE-276 CWE-78 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Adobe Digital Editions Client/Desktop applications / Multimedia software |
| Vendor | Adobe |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Incorrect default permissions
EUVDB-ID: #VU56567
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-39828
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions for temporary files and folders that are set by the application. A local user with access to the system can view contents of files and directories or modify them.
MitigationInstall updates from vendor's website.
Vulnerable software versionsAdobe Digital Editions : 4.0 - 4.5.11.187646
External linkshttp://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Incorrect default permissions
EUVDB-ID: #VU56568
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-39827
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to overwrite arbitrary files on the system.
The vulnerability exists due to incorrect default permissions for temporary files and folders that are set by the application. A remote attacker can trick the victim to open a specially crafted file and overwrite arbitrary files on the system.
Install updates from vendor's website.
Vulnerable software versionsAdobe Digital Editions : 4.0 - 4.5.11.187646
External linkshttp://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) OS Command Injection
EUVDB-ID: #VU56569
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-39826
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation. A remote authenticated attacker can trick the victim to open a specially crafted file and execute arbitrary OS commands on the system.
Install updates from vendor's website.
Vulnerable software versionsAdobe Digital Editions : 4.0 - 4.5.11.187646
External linkshttp://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
