CVE-2021-41093 : Security Advisory and Response
Learn about CVE-2021-41093, a high-severity account takeover vulnerability in Wire's iOS versions prior to 3.86. Find out the impact, affected systems, exploitation details, and mitigation steps.
Wire is an open-source secure messenger that had a vulnerability allowing an attacker to take over an account by changing the email when having an old but valid access token. The issue has been resolved in version 3.86. This CVE has a CVSS base score of 7.4, indicating a high severity level.
Understanding CVE-2021-41093
In this CVE, the attacker could exploit an account takeover vulnerability in Wire's iOS versions prior to 3.86, potentially compromising user accounts.
What is CVE-2021-41093?
CVE-2021-41093 refers to the account takeover vulnerability in Wire's iOS application versions older than 3.86, allowing unauthorized individuals to take control of user accounts.
The Impact of CVE-2021-41093
The vulnerability could result in serious consequences, including unauthorized access to user accounts, potential leaks of sensitive information, and compromise of user privacy.
Technical Details of CVE-2021-41093
This section discusses the technical aspects and specifics of the CVE in detail.
Vulnerability Description
The vulnerability in Wire's iOS versions before 3.86 allowed attackers with an old but valid access token to perform an account takeover by changing the email associated with the account.
Affected Systems and Versions
- Product: wire-ios
- Vendor: wireapp
- Affected Versions: < 3.86
Exploitation Mechanism
- Attack Complexity: HIGH
- Attack Vector: NETWORK
- Confidentiality Impact: HIGH
- Integrity Impact: HIGH
- Privileges Required: NONE
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-41093.
Immediate Steps to Take
- Update Wire application to version 3.86 or newer to patch the vulnerability.
- Encourage users to change their passwords and enable two-factor authentication.
- Monitor accounts for any suspicious activities or unauthorized access.
Long-Term Security Practices
- Regularly update software and applications to the latest versions.
- Educate users about safe online practices and awareness of phishing attempts.
- Conduct security audits and penetration testing regularly to identify and address vulnerabilities.
Patching and Updates
- Apply security patches promptly as they become available.
- Stay informed about security advisories and updates from Wire to ensure ongoing protection.