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

CVE-2018-5241

Summary

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.

References

Vulnerable Configurations

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

CVSS

Base:	7.5 (as of 08-07-2021 - 16:37)
Impact:
Exploitability:

CWE

NVD-CWE-noinfo

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	LOW	NONE

Impact

Confidentiality	Integrity	Availability
PARTIAL	PARTIAL	PARTIAL

cvss-vector via4

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

refmap via4

bid	104282
confirm	https://www.symantec.com/security-center/network-protection-security-advisories/SA167
sectrack	1040993

Last major update

08-07-2021 - 16:37

Published

29-05-2018 - 13:29

Last modified

08-07-2021 - 16:37