SymantecCVE-2018-5241CVE-2018-5241
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
74.6%
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.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| broadcom | advanced_secure_gateway | 6.6 | cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:* |
| broadcom | advanced_secure_gateway | 6.7 | cpe:2.3:a:broadcom:advanced_secure_gateway:6.7:*:*:*:*:*:*:* |
| broadcom | symantec_proxysg | 6.5 | cpe:2.3:a:broadcom:symantec_proxysg:6.5:*:*:*:*:*:*:* |
| broadcom | symantec_proxysg | 6.6 | cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:* |
| broadcom | symantec_proxysg | 6.7 | cpe:2.3:a:broadcom:symantec_proxysg:6.7:*:*:*:*:*:*:* |
CNA Affected
[
{
"product": "Advanced Secure Gateway (ASG)",
"vendor": "Symantec Corporation",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "affected",
"version": "6.7"
}
]
},
{
"product": "ProxySG",
"vendor": "Symantec Corporation",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"status": "affected",
"version": "6.6"
},
{
"status": "affected",
"version": "6.7"
}
]
}
]Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
74.6%