CVE-2021-42719 : Exploit Details and Defense Strategies
Learn about CVE-2021-42719 affecting Adobe Bridge versions <=11.1.1. An out-of-bounds read vulnerability allows attackers to execute code. Mitigate the risk with updates and security practices.
Adobe Bridge version 11.1.1 (and earlier) is affected by an out-of-bounds read vulnerability when parsing a crafted .jpe file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code in the context of the current user. Exploitation of this issue requires user interaction by opening a malicious file.
Understanding CVE-2021-42719
Adobe Bridge Out-of-bounds read could lead to Arbitrary Code Execution
What is CVE-2021-42719?
CVE-2021-42719 is a vulnerability in Adobe Bridge versions 11.1.1 and earlier that allows an attacker to execute arbitrary code by exploiting an out-of-bounds read issue when processing specially crafted .jpe files.
The Impact of CVE-2021-42719
- CVSS Base Score: 7.1 (High)
- Attack Vector: Local
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Exploitation could lead to arbitrary code execution in the context of the user.
Technical Details of CVE-2021-42719
Adobe Bridge Out-of-bounds read vulnerability
Vulnerability Description
The vulnerability involves an out-of-bounds read when processing a malicious .jpe file, potentially allowing an attacker to execute arbitrary code.
Affected Systems and Versions
- Affected Product: Bridge
- Vendor: Adobe
- Affected Versions:
- Version less than or equal to 11.1.1 (custom version)
- Version unspecified
Exploitation Mechanism
To exploit this vulnerability, an attacker would need the victim to interact with a malicious .jpe file. The attacker could execute code in the user's context if successful.
Mitigation and Prevention
Steps to address and prevent the CVE-2021-42719 vulnerability
Immediate Steps to Take
- Update Adobe Bridge to the latest version.
- Exercise caution when opening files from unknown or untrusted sources.
- Consider implementing file type restrictions in email systems.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Educate users on recognizing and avoiding suspicious files or links.
- Implement strong endpoint protection and security software.
Patching and Updates
Adobe has released patches to address this vulnerability. Ensure to apply the latest updates and security fixes.