CVE-2017-17153 in NGFW Module
Resumen
por VulDB • 2026-05-26
Based on the information provided, here is a structured analysis and recommendation regarding the **memory leak vulnerability** in Huawei Secospace USG series firewalls.
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### ???? Vulnerability Summary
- **Affected Products**: - Secospace USG6500 - Secospace USG6600 - USG9500 - **Affected Versions**: - V500R001C00 (and service packs: SPC100, SPC200, SPC300, SPC301, SPC500, SPC500PWE, SPH303, SPH508) - V500R001C20 (and service packs: SPC100, SPC100PWE, SPC101, SPC200, SPC200B062, SPC200PWE, SPC300, SPC300B078, SPC300PWE) - **Vulnerability Type**: Memory Leak - **Root Cause**: Insufficient input validation leading to failure in memory release. - **Impact**: - Gradual consumption of system memory. - Potential system instability, exceptions, or denial of service (DoS). - May degrade firewall performance over time.
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### ????️ Risk Assessment
- **Severity**: **Medium to High** - While not directly exploitable for remote code execution, a memory leak can lead to **system crash or unavailability**, especially under sustained attack or high traffic conditions. - Attackers may craft specific packets or sessions to trigger the memory leak repeatedly, accelerating resource exhaustion.
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### ✅ Recommended Mitigation Steps
#### 1. **Apply Vendor Patches** - Check Huawei’s official security advisory for the latest patches addressing this memory leak issue. - Upgrade to a **fixed version** if available. If no fixed version is listed, contact Huawei Support for a hotfix or workaround.
#### 2. **Workarounds (If Patching Is Not Immediately Possible)** - **Limit Exposure**: Restrict access to management interfaces and disable unnecessary services. - **Monitor Memory Usage**: Implement monitoring to detect abnormal memory growth. - **Rate Limiting**: Apply rate-limiting rules to prevent excessive session creation or malformed packet floods. - **Regular Reboots**: As a temporary measure, schedule periodic reboots to reclaim leaked memory (not ideal for production environments).
#### 3. **Network Segmentation & Defense-in-Depth** - Place firewalls behind additional security controls (e.g., IPS, WAF) to filter malicious traffic before it reaches the firewall. - Enable logging and alerting for suspicious activities that may trigger the vulnerability.
#### 4. **Verify Version Status** - Confirm the exact software version running on each device. - Cross-reference with Huawei’s official support portal to determine if your version is affected and whether a patch is available.
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### ???? References
- **Huawei Security Advisory**: Search for CVE or Huawei Security Bulletin related to “USG memory leak” or “insufficient input validation.” - **Vendor Support Portal**: [Huawei Support](https://support.huawei.com)
- **CVE Database**: Check [NVD](https://nvd.nist.gov) or [CVE.org] for assigned CVE IDs if available.
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### ⚠️ Note
Since this vulnerability involves **memory management flaws**, it may be difficult to exploit remotely without triggering detection. However, in high-traffic or heavily targeted environments, even a low-severity memory leak can become critical due to cumulative resource exhaustion.
If you are responsible for these devices, **prioritize patching or upgrading** to a secure version. For further assistance, engage Huawei Professional Services or your authorized partner.
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