CVE-2017-17305 : What You Need to Know
Learn about CVE-2017-17305, a vulnerability in Huawei Firewall products allowing attackers to decrypt IPSEC tunnel data. Find mitigation steps and long-term security practices here.
A vulnerability known as the Bleichenbacher Oracle in Huawei Firewall products such as USG2205BSR, USG2220BSR, USG5120BSR, and USG5150BSR allows remote attackers to decrypt IPSEC tunnel data, potentially leading to a Bleichenbacher oracle attack.
Understanding CVE-2017-17305
This CVE involves a security vulnerability in the IPSEC IKEv1 implementations of specific Huawei Firewall products.
What is CVE-2017-17305?
The Bleichenbacher Oracle vulnerability in Huawei Firewall products enables attackers to decrypt IPSEC tunnel ciphertext data, exploiting a Bleichenbacher RSA padding oracle.
The Impact of CVE-2017-17305
Successful exploitation of this vulnerability can compromise the security of IPSec tunnels, posing a significant risk to data confidentiality.
Technical Details of CVE-2017-17305
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability allows remote attackers to decrypt IPSEC tunnel ciphertext data by exploiting a Bleichenbacher RSA padding oracle, potentially leading to a Bleichenbacher oracle attack.
Affected Systems and Versions
- Affected products: USG2205BSR, USG2220BSR, USG5120BSR, USG5150BSR
- Vulnerable versions: USG2205BSR V300R001C10SPC600, USG2220BSR V300R001C00, USG5120BSR V300R001C00, USG5150BSR V300R001C00
Exploitation Mechanism
The vulnerability can be exploited remotely by attackers to decrypt IPSEC tunnel data, compromising the confidentiality of the communication.
Mitigation and Prevention
Protecting systems from CVE-2017-17305 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches provided by Huawei promptly to address the vulnerability.
- Monitor network traffic for any signs of unauthorized decryption activities.
- Implement strong encryption protocols and secure key management practices.
Long-Term Security Practices
- Regularly update and patch firewall devices to mitigate potential vulnerabilities.
- Conduct security assessments and penetration testing to identify and address security gaps.
Patching and Updates
- Stay informed about security advisories from Huawei and apply patches as soon as they are released to ensure the security of the firewall products.