CVE-2021-35991 Explained : Impact and Mitigation

Adobe Bridge version 11.0.2 (and earlier) is affected by an Access of Uninitialized Pointer vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to disclose arbitrary memory information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Understanding CVE-2021-35991

CVE-2021-35991 is a vulnerability present in Adobe Bridge that allows an attacker to access uninitialized pointers, leading to information disclosure when handling specific files. This could potentially expose sensitive memory data to unauthorized parties.

What is CVE-2021-35991?

The CVE-2021-35991 vulnerability affects Adobe Bridge version 11.0.2 and earlier, enabling attackers to exploit uninitialized pointers to reveal memory information of the current user. Successful exploitation necessitates user interaction where a malicious file is opened.

The Impact of CVE-2021-35991

The impact of CVE-2021-35991 includes unauthorized access to memory information, potentially exposing sensitive data to malicious actors. By leveraging this vulnerability, attackers can compromise the confidentiality of user data stored within Adobe Bridge.

Technical Details of CVE-2021-35991

CVE-2021-35991 poses a low severity threat with a CVSS base score of 3.3. The attack complexity is rated as LOW with a requirement of local access and user interaction. The exploit affects the confidentiality of data but does not impact system integrity or availability.

Vulnerability Description

The vulnerability in Adobe Bridge arises from an Access of Uninitialized Pointer issue during file parsing operations. Attackers can exploit this flaw to reveal arbitrary memory information.

Affected Systems and Versions

Adobe Bridge versions up to 11.0.2 are affected by CVE-2021-35991. Users operating on these versions are advised to take immediate action to mitigate the risk of exploitation.

Exploitation Mechanism

To exploit CVE-2021-35991, an attacker must craft a malicious file and entice a victim to open it. By manipulating uninitialized pointers, the attacker can gain access to memory data within Adobe Bridge.

Mitigation and Prevention

To safeguard systems against CVE-2021-35991, users are recommended to take immediate steps, implement long-term security practices, and apply necessary patches and updates.

Immediate Steps to Take

Users should refrain from opening files from untrusted sources or unknown origins. It is crucial to exercise caution when interacting with potentially malicious files to prevent exploitation of the vulnerability.

Long-Term Security Practices

Implementing robust security measures, such as maintaining up-to-date software versions, conducting regular security audits, and raising awareness about file safety practices, can enhance overall system security.

Patching and Updates

Adobe has released patches addressing CVE-2021-35991. Users are strongly advised to apply these updates promptly to eliminate the vulnerability and strengthen the security posture of Adobe Bridge.