Broken or risky cryptographic algorithm in Symantec Advanced Secure Gateway
Priority LOW 30CWE-327Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-327.
Summary
The ASG/ProxySG FTP proxy WebFTP mode allows intercepting FTP connections where a user accesses an FTP server via a ftp:// URL in a web browser. An information disclosure vulnerability in the WebFTP mode allows a malicious user to obtain plaintext authentication credentials for a remote FTP server from the ASG/ProxySG's web listing of the FTP server. Affected versions: ASG 6.6 and 6.7 prior to 6.7.4.2; ProxySG 6.5 prior to 6.5.10.15, 6.6, and 6.7 prior to 6.7.4.2.
Why it matters now
EPSS 0.00589 48th percentileScored 2026-11-07
Fix Fixed Symantec ProxySG (Symantec Corporation): 6.5.10.15, 6.7.4.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Symantec | Symantec Advanced Secure Gateway (ASG) | 6.6 and 6.7 prior to 6.7.4.2 | — | No fix listed | CNA |
| Symantec | Symantec ProxySG | 6.5 to before 6.5.10.15; 6.6; 6.7 to before 6.7.4.2 | 6.5.10.15, 6.7.4.2 | Patch available | CNA |
- Symantec Advanced Secure Gateway (ASG) VendorSymantec Affected 6.6 and 6.7 prior to 6.7.4.2 Fixed in — No fix listed CNA
- Symantec ProxySG VendorSymantec Affected 6.5 to before 6.5.10.15; 6.6; 6.7 to before 6.7.4.2 Fixed in 6.5.10.15, 6.7.4.2 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:broadcom:advanced_secure_gateway:*:*:*:*:*:*:*:* | 6.7 to before 6.7.4.2 | Vulnerable | Broadcom |
| cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:* | 6.6 | Vulnerable | Broadcom |
| cpe:2.3:a:broadcom:symantec_proxysg:*:*:*:*:*:*:*:* | 6.5 to before 6.5.10.15; 6.7 to before 6.7.4.2 | Vulnerable | Broadcom |
| cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:* | 6.6 | Vulnerable | Broadcom |
- cpe:2.3:a:broadcom:advanced_secure_gateway:*:*:*:*:*:*:*:* Versions 6.7 to before 6.7.4.2 Vulnerable ·Broadcom
- cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:* Versions 6.6 Vulnerable ·Broadcom
- cpe:2.3:a:broadcom:symantec_proxysg:*:*:*:*:*:*:*:* Versions 6.5 to before 6.5.10.15; 6.7 to before 6.7.4.2 Vulnerable ·Broadcom
- cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:* Versions 6.6 Vulnerable ·Broadcom
Remediation
- Fix · CNA Symantec ProxySG (Symantec Corporation) Fixed in 6.5.10.15, 6.7.4.2
Timeline
- 2026-10-02 Threatist record created from CVE-2018-18371
- 2026-10-03 Alias added: GHSA-863p-h29x-84j2
References
More Symantec vulnerabilities
- TI-2017-04157 Command injection in Symantec Messaging Gateway KEVCVSS 3.1HIGH 8.8
- TI-2009-01353 The Intel LANDesk Common Base Agent (CBA) in Symantec Alert Management System 2 (AMS2)… CVSS 2.0HIGH 10.0
- TI-2017-04156 The Symantec Messaging Gateway can encounter an issue of remote code execution, which… CVSS 3.0CRITICAL 10.0
- TI-2012-00284 The management GUI in Symantec Web Gateway 5.0.x before 5.0.3 does not properly restrict… CVSS 2.0HIGH 10.0
- TI-2006-02539 Stack-based buffer overflow in Symantec Antivirus 10.1 and Client Security 3.1 allows… CVSS 2.0HIGH 10.0
- TI-2012-02563 The management console in Symantec Web Gateway 5.0.x before 5.0.3.18 allows remote… CVSS 2.0HIGH 10.0
Sources
- CVE-2018-18371 · CVE Program
- CVE-2018-18371 · NVD
- FIRST EPSS
- GHSA-863p-h29x-84j2 · GitHub Advisory Database · CC BY 4.0
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