CVE-2017-7414 : Exploit Details and Defense Strategies

A vulnerability known as OS Command Injection can be found in Horde_Crypt before version 2.7.6, which is used in Horde Groupware Webmail Edition 5.x through 5.2.17. Attackers can exploit this vulnerability by sending a maliciously crafted PGP signed email to the targeted Horde user.

Understanding CVE-2017-7414

This CVE involves OS Command Injection in Horde_Crypt before version 2.7.6, affecting Horde Groupware Webmail Edition 5.x through 5.2.17.

What is CVE-2017-7414?

CVE-2017-7414 is a vulnerability in Horde_Crypt that allows attackers to execute OS commands by sending a specially crafted PGP signed email to a Horde user.

The Impact of CVE-2017-7414

This vulnerability can lead to unauthorized execution of commands on the system of the targeted Horde user, potentially resulting in data breaches or system compromise.

Technical Details of CVE-2017-7414

This section provides more technical insights into the vulnerability.

Vulnerability Description

OS Command Injection can occur in Horde_Crypt before version 2.7.6, specifically when a user has enabled PGP features in their preferences and chosen to automatically verify PGP signed messages when viewed.

Affected Systems and Versions

Horde_Crypt before version 2.7.6
Horde Groupware Webmail Edition 5.x through 5.2.17

Exploitation Mechanism

Attacker sends a maliciously crafted PGP signed email to the targeted Horde user
The user needs to either view or preview the email for the exploit to take effect

Mitigation and Prevention

Protecting systems from CVE-2017-7414 is crucial to maintaining security.

Immediate Steps to Take

Update Horde_Crypt to version 2.7.6 or newer
Disable automatic verification of PGP signed messages
Educate users on identifying and avoiding suspicious emails

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities
Implement email filtering and security measures to detect and block malicious emails

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities