9.8
CRITICAL
CVE-2018-5241
Symantec Advanced Secure Gateway SAML XML Comment Bypass Vulnerability
Description

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.

INFO

Published Date :

May 29, 2018, 1:29 p.m.

Last Modified :

Nov. 21, 2024, 4:08 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-5241 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Broadcom advanced_secure_gateway
2 Broadcom symantec_proxysg
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-5241.

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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-5241 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-5241 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/104282
    Added Reference http://www.securitytracker.com/id/1040993
    Added Reference https://www.symantec.com/security-center/network-protection-security-advisories/SA167
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Jul. 08, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:symantec:advanced_secure_gateway:6.6:*:*:*:*:*:*:* OR *cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 08, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:symantec:advanced_secure_gateway:6.7:*:*:*:*:*:*:* OR *cpe:2.3:a:broadcom:advanced_secure_gateway:6.7:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jun. 24, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:symantec:proxysg:6.7:*:*:*:*:*:*:* OR *cpe:2.3:a:broadcom:symantec_proxysg:6.7:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jun. 24, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:symantec:proxysg:6.5:*:*:*:*:*:*:* OR *cpe:2.3:a:broadcom:symantec_proxysg:6.5:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jun. 24, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:symantec:proxysg:6.6:*:*:*:*:*:*:* OR *cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-254 CWE-347 CWE-310 NVD-CWE-noinfo
  • Initial Analysis by [email protected]

    Jul. 09, 2018

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.securitytracker.com/id/1040993 No Types Assigned http://www.securitytracker.com/id/1040993 Third Party Advisory, VDB Entry
    Changed Reference Type https://www.symantec.com/security-center/network-protection-security-advisories/SA167 No Types Assigned https://www.symantec.com/security-center/network-protection-security-advisories/SA167 Vendor Advisory
    Changed Reference Type http://www.securityfocus.com/bid/104282 No Types Assigned http://www.securityfocus.com/bid/104282 Third Party Advisory, VDB Entry
    Added CWE CWE-254
    Added CPE Configuration OR *cpe:2.3:a:symantec:advanced_secure_gateway:6.6:*:*:*:*:*:*:* *cpe:2.3:a:symantec:advanced_secure_gateway:6.7:*:*:*:*:*:*:* *cpe:2.3:a:symantec:proxysg:6.5:*:*:*:*:*:*:* *cpe:2.3:a:symantec:proxysg:6.6:*:*:*:*:*:*:* *cpe:2.3:a:symantec:proxysg:6.7:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 31, 2018

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1040993 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/104282 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-5241 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-5241 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.48 }} 0.05%

score

0.75490

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability