Vulnerability Details : CVE-2018-5387
Potential exploit
Wizkunde SAMLBase may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.
Vulnerability category: BypassGain privilege
Products affected by CVE-2018-5387
- cpe:2.3:a:wizkunde:samlbase:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-5387
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-5387
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2018-5387
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: cret@cert.org (Secondary)
-
The product does not verify, or incorrectly verifies, the cryptographic signature for data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-5387
-
https://github.com/GoGentoOSS/SAMLBase/issues/3
SAML Vulnerability · Issue #3 · GoGentoOSS/SAMLBase · GitHubIssue Tracking;Patch;Third Party Advisory
-
https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
Duo Finds SAML Vulnerabilities Affecting Multiple Implementations | Duo SecurityExploit;Third Party Advisory
-
https://www.kb.cert.org/vuls/id/475445
VU#475445 - Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversalThird Party Advisory;US Government Resource
-
https://github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3
Fixed comment vulnerability in verifying signatures · GoGentoOSS/SAMLBase@482cdf8 · GitHubPatch;Third Party Advisory
Jump to