OSSEC-HIDS up to 3.5.0 ossec-analysisd OS_CleanMSG Control Character input validation

Summaryinfo

A vulnerability was found in OSSEC-HIDS up to 3.5.0. It has been rated as critical. Affected is the function OS_CleanMSG of the component ossec-analysisd. The manipulation as part of Control Character leads to input validation. This vulnerability is referenced as CVE-2020-8445. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in OSSEC-HIDS up to 3.5.0. This issue affects the function OS_CleanMSG of the component ossec-analysisd. The manipulation as part of a Control Character leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is integrity, and availability. The summary by CVE is:

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.

The weakness was published 01/30/2020. The identification of this vulnerability is CVE-2020-8445 since 01/30/2020. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-149558, VDB-149557, VDB-149556 and VDB-149554. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• OSSEC-HIDS

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5.0

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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