CVE-2018-5241 is a critical SAML authentication bypass vulnerability affecting Symantec Advanced Secure Gateway (ASG) 6.6 and 6.7, and ProxySG 6.5, 6.6, and 6.7. The flaw allows a remote attacker to bypass user authentication for intercepted network traffic by manipulating SAML responses due to incorrect handling of XML comments, without invalidating the cryptographic signature. With a CVSS score of 9.8 (Critical), this vulnerability presents a significant risk due to its network-based attack vector, low complexity, and potential for high impact on confidentiality, integrity, and availability. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
6.6CPE matchmatch criteria | cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:* | ||
6.7CPE matchmatch criteria | cpe:2.3:a:broadcom:advanced_secure_gateway:6.7:*:*:*:*:*:*:* | ||
6.5CPE matchmatch criteria | cpe:2.3:a:broadcom:symantec_proxysg:6.5:*:*:*:*:*:*:* | ||
6.6CPE matchmatch criteria | cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:* | ||
6.7CPE matchmatch criteria | cpe:2.3:a:broadcom:symantec_proxysg:6.7:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.