CVE-2017-7229 : Exploit Details and Defense Strategies
Learn about CVE-2017-7229 involving the alteration of PGP/MIME encrypted messages in Vaultive O365, leading to decryption issues, Denial of Service, and Information Disclosure. Find mitigation steps and prevention measures here.
This CVE involves the alteration of PGP/MIME encrypted messages in a Vaultive O365 frontend, causing issues with decryption and potentially leading to Denial of Service and Information Disclosure.
Understanding CVE-2017-7229
What is CVE-2017-7229?
When PGP/MIME encrypted messages are processed in a Vaultive O365 frontend (version earlier than 4.5.21) via IMAP or SMTP, their Content-Type is changed, making decryption challenging for most PGP/MIME-capable mail user agents.
The Impact of CVE-2017-7229
The alteration of encrypted messages can result in Denial of Service as the device fails to process encrypted mail properly, leading to potential Information Disclosure.
Technical Details of CVE-2017-7229
Vulnerability Description
PGP/MIME encrypted messages inserted into a Vaultive O365 frontend via IMAP or SMTP have their Content-Type modified, causing decryption issues for PGP/MIME-capable mail user agents.
Affected Systems and Versions
- Product: Vaultive O365
- Versions: Earlier than 4.5.21
Exploitation Mechanism
The alteration of the Content-Type of encrypted messages disrupts the decryption process, making it difficult for mail user agents to decrypt the messages correctly.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to Vaultive O365 version 4.5.21 or later to address the vulnerability.
- Avoid inserting PGP/MIME encrypted messages via IMAP or SMTP until the system is patched.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Educate users on secure email practices to minimize the risk of Information Disclosure.
Patching and Updates
Apply patches and updates provided by Vaultive to ensure the secure processing of encrypted messages.