SB2018030707 - Security restrictions bypass in IBM Security Access Manager
Published: March 7, 2018
Security Bulletin ID
SB2018030707
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) XXE attack (CVE-ID: CVE-2018-1443)
CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote authenticated attacker to perform XXE attack and bypass security restrictions.
The vulnerability exists in SAML-based single sign-on (SSO) systems due to improper handling of XML External Entity (XXE) entries when parsing an XML file. A remote attacker can trick SAML systems into authenticating as a different user without knowledge of the victim users password and bypass security restrictions to perform further attacks.
Remediation
Install update from vendor's website.