CVE-2020-8445

 

Published at: - 30-01-2020 02:15

Last modified: - 12-09-2022 08:42

Total changes: - 2

Description

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 (\n) 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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://www.ossec.net/
• https://github.com/ossec/ossec-hids/issues/1814
• https://github.com/ossec/ossec-hids/issues/1821
• GLSA-202007-33-Third Party Advisory

 

Keywords

NVD

 

CVE-2020-8445

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures