// For flags

CVE-2020-8445

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In OSSEC-HIDS 2.7 through 3.5.0, the OS_CleanMSG function in ossec-analysisd doesn't remove or encode terminal control characters or newlines from processed log messages. In many cases, those characters are later logged. Because newlines (
) are permitted in messages processed by ossec-analysisd, it may be possible to inject nested events into the ossec log. Use of terminal control characters may allow obfuscating events or executing commands when viewed through vulnerable terminal emulators. This may be an unauthenticated remote attack for certain types and origins of logged data.

En OSSEC-HIDS versiones 2.7 hasta 3.5.0, la función OS_CleanMSG en ossec-analysisd no elimina ni codifica caracteres de control de terminal o nuevas líneas de mensajes de registro procesados. En muchos casos, esos caracteres son registrados luego. Debido a que nuevas líneas (
) son permitidas en los mensajes procesados ??por ossec-analysisd, puede ser posible inyectar eventos anidados en el registro de ossec. El uso de caracteres de control de terminal puede permitir eventos de ofuscación o ejecutar comandos cuando se visualizaron por medio de emuladores de terminal vulnerables. Este puede ser un ataque remoto no autenticado para ciertos tipos y orígenes de datos registrados.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-30 CVE Reserved
  • 2020-01-30 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-09-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Ossec
Search vendor "Ossec"
 Ossec
Search vendor "Ossec" for product "Ossec"
 >= 2.7 <= 3.5.0
Search vendor "Ossec" for product "Ossec" and version " >= 2.7 <= 3.5.0"
-
Affected