CVE-2018-7356 Explained : Impact and Mitigation
Learn about CVE-2018-7356 affecting ZTE ZXR10 8905E up to V3.03.10.B23P2. Discover the impact, technical details, and mitigation steps for this TCP ISN reuse vulnerability.
The ZTE ZXR10 8905E product, up to version V3.03.10.B23P2, is vulnerable to TCP Initial Sequence Number (ISN) reuse, potentially allowing remote attackers to manipulate connections.
Understanding CVE-2018-7356
This CVE involves a security vulnerability in the ZTE ZXR10 8905E product that could be exploited by attackers to falsify connections.
What is CVE-2018-7356?
The vulnerability in ZTE ZXR10 8905E up to version V3.03.10.B23P2 allows for the reuse of TCP Initial Sequence Numbers, leading to predictable ISNs and potential connection spoofing by remote attackers.
The Impact of CVE-2018-7356
The vulnerability poses a medium-severity risk, with a CVSS base score of 5.6. Attackers could exploit this flaw to manipulate connections, impacting the confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2018-7356
The technical aspects of the CVE-2018-7356 vulnerability.
Vulnerability Description
The flaw in ZTE ZXR10 8905E versions up to V3.03.10.B23P2 allows for the reuse of TCP Initial Sequence Numbers, enabling the generation of easily predictable ISNs.
Affected Systems and Versions
- Product: ZTE ZXR10 8905E
- Vendor: ZTE
- Versions Affected: Up to V3.03.10.B23P2
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Vector String: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2018-7356.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Monitor network traffic for any suspicious activity.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and penetration testing to identify vulnerabilities.
Patching and Updates
- ZTE may release patches or updates to address the vulnerability. Stay informed about security advisories and apply patches as soon as they are available.