CVE-2019-19411 Explained : Impact and Mitigation

The USG9500, with specific versions, is vulnerable to information leakage due to mishandling of encryption initialization vectors.

Understanding CVE-2019-19411

What is CVE-2019-19411?

The CVE-2019-19411 vulnerability affects the USG9500 firewall with certain versions, leading to information leakage.

The Impact of CVE-2019-19411

The vulnerability allows attackers to exploit the encryption algorithm's initialization vector mishandling, compromising confidentiality.

Technical Details of CVE-2019-19411

Vulnerability Description

USG9500 with versions V500R001C30SPC100, V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 is susceptible to information leakage.
Incorrect handling of the initialization vector in an encryption algorithm is the root cause.

Affected Systems and Versions

Product: USG9500
Versions: V500R001C30SPC100, V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200

Exploitation Mechanism

Attackers gaining access to the cryptographic primitive can exploit the vulnerability, compromising confidentiality.

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch all systems and software.
Implement strong access controls and encryption protocols.
Conduct regular security audits and assessments.

Patching and Updates

Refer to the vendor's security advisory for patching instructions and updates.