CVE-2021-31559
S2S TcpToken authentication bypass
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A crafted request bypasses S2S TCP Token authentication writing arbitrary events to an index in Splunk Enterprise Indexer 8.1 versions before 8.1.5 and 8.2 versions before 8.2.1. The vulnerability impacts Indexers configured to use TCPTokens. It does not impact Universal Forwarders.
Una petición diseñada omite la autenticación S2S TCP Token escribiendo eventos arbitrarios en un índice en Splunk Enterprise Indexer versiones 8.1 anteriores a 8.1.5 y versiones 8.2 anteriores a 8.2.1. La vulnerabilidad afecta a los Indexadores configurados para usar TCPTokens. No afecta a los reenviadores universales
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-11-03 CVE Reserved
- 2022-05-06 CVE Published
- 2023-11-27 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-288: Authentication Bypass Using an Alternate Path or Channel
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.splunk.com/en_us/product-security/announcements/svd-2022-0503.html | 2022-10-25 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Splunk Search vendor "Splunk" | Splunk Search vendor "Splunk" for product "Splunk" | >= 8.1.0 < 8.1.5 Search vendor "Splunk" for product "Splunk" and version " >= 8.1.0 < 8.1.5" | enterprise |
Affected
| ||||||
| Splunk Search vendor "Splunk" | Splunk Search vendor "Splunk" for product "Splunk" | 8.2.0 Search vendor "Splunk" for product "Splunk" and version "8.2.0" | enterprise |
Affected
| ||||||