CVE-2018-5241

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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.symantec.com/security-center/network-protection-security-advisories/SA167	Vendor Advisory
http://www.securitytracker.com/id/1040993	Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/104282	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:broadcom:symantec_proxysg:6.6:::::::*
	cpe:2.3:a:broadcom:advanced_secure_gateway:6.7:::::::*
	cpe:2.3:a:broadcom:symantec_proxysg:6.7:::::::*
	cpe:2.3:a:broadcom:symantec_proxysg:6.5:::::::*
	cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:::::::*

Information

Published : 2018-05-29 06:29

Updated : 2021-07-08 09:37

NVD link : CVE-2018-5241

Mitre link : CVE-2018-5241

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

broadcom

symantec_proxysg
advanced_secure_gateway

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