SB2021091440 - Multiple vulnerabilities in Adobe Digital Editions
Published: September 14, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Incorrect default permissions (CVE-ID: CVE-2021-39828)
CWE-ID: CWE-276 - Incorrect Default Permissions
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The 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.
2) Incorrect default permissions (CVE-ID: CVE-2021-39827)
CWE-ID: CWE-276 - Incorrect Default Permissions
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The 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.
3) OS Command Injection (CVE-ID: CVE-2021-39826)
CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The 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.
Remediation
Install update from vendor's website.