Vulnerability Details : CVE-2018-3822
X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.
Vulnerability category: Directory traversalBypassGain privilege
Products affected by CVE-2018-3822
- cpe:2.3:a:elastic:x-pack:6.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:elastic:x-pack:6.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:elastic:x-pack:6.2.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-3822
0.30%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-3822
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2018-3822
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: bressers@elastic.co (Secondary)
References for CVE-2018-3822
-
https://discuss.elastic.co/t/elastic-stack-6-2-3-security-update/124848
Elastic Stack 6.2.3 security update - Security Announcements - Discuss the Elastic StackVendor Advisory
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