CVE-2020-27847
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.
Overview
- CVE ID
- CVE-2020-27847
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-05-28T11:15:07
- Last Modified Date
- 2021-06-02T16:32:08
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:* | 1 | OR | 2.27.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1907732 | Issue Tracking Third Party Advisory |
| https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5 | Patch Third Party Advisory |
| https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-27847 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27847 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:13:54 | Added to TrackCVE | |||
| 2022-12-05 03:13:00 | 2021-05-28T11:15Z | 2021-05-28T11:15:07 | CVE Published Date | updated |
| 2022-12-05 03:13:00 | 2021-06-02T16:32:08 | CVE Modified Date | updated | |
| 2022-12-05 03:13:00 | Analyzed | Vulnerability Status | updated |