CVE-2018-5241
First published: Tue May 29 2018(Updated: )
Symantec Advanced Secure Gateway (ASG) 6.6 and 6.7, and ProxySG 6.5, 6.6, and 6.7 are susceptible to a SAML authentication bypass vulnerability. The products can be configured with a SAML authentication realm to authenticate network users in intercepted proxy traffic. When parsing SAML responses, ASG and ProxySG incorrectly handle XML nodes with comments. A remote attacker can modify a valid SAML response without invalidating its cryptographic signature. This may allow the attacker to bypass user authentication security controls in ASG and ProxySG. This vulnerability only affects authentication of network users in intercepted traffic. It does not affect administrator user authentication for the ASG and ProxySG management consoles.
Credit: secure@symantec.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Broadcom Advanced Secure Gateway | =6.6 | |
| Broadcom Advanced Secure Gateway | =6.7 | |
| Broadcom Symantec Proxysg | =6.5 | |
| Broadcom Symantec Proxysg | =6.6 | |
| Broadcom Symantec Proxysg | =6.7 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-5241.
Which products are affected by this vulnerability?
Symantec Advanced Secure Gateway (ASG) versions 6.6 and 6.7, and ProxySG versions 6.5, 6.6, and 6.7 are affected.
What is the severity of CVE-2018-5241?
The severity of CVE-2018-5241 is critical with a CVSS score of 9.8.
How can this vulnerability be exploited?
This vulnerability can be exploited through a SAML authentication bypass.
Is there a fix available for CVE-2018-5241 vulnerability?
Yes, it is recommended to update to the latest version of the affected products to mitigate this vulnerability.
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- agent/references
- agent/severity
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/first-publish-date
- agent/event
- agent/description
- vendor/broadcom
- canonical/broadcom advanced secure gateway
- version/broadcom advanced secure gateway/6.6
- version/broadcom advanced secure gateway/6.7
- canonical/broadcom symantec proxysg
- version/broadcom symantec proxysg/6.5
- version/broadcom symantec proxysg/6.6
- version/broadcom symantec proxysg/6.7