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 Symantec Advanced Secure Gateway | =6.6 | |
| Broadcom Symantec Advanced Secure Gateway | =6.7 | |
| Broadcom ProxySG | =6.5 | |
| Broadcom ProxySG | =6.6 | |
| Broadcom ProxySG | =6.7 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
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.
- agent/type
- agent/author
- agent/references
- agent/severity
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/first-publish-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/broadcom
- canonical/broadcom symantec advanced secure gateway
- version/broadcom symantec advanced secure gateway/6.6
- version/broadcom symantec advanced secure gateway/6.7
- canonical/broadcom proxysg
- version/broadcom proxysg/6.5
- version/broadcom proxysg/6.6
- version/broadcom proxysg/6.7