CVE-2020-8448: NULL Pointer Dereference

In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis ossec-analysisd is vulnerable to a denial of service NULL pointer dereference via crafted messages written directly to the analysisd UNIX domain socket by a local user...

CVE-2020-8447: Use After Free

In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis ossec-analysisd is vulnerable to a use-after-free during processing of syscheck formatted msgs received from authenticated remote agents and delivered to the analysisd processing queue by ossec-remoted...

CVE-2020-8445: Improper Input Validation

In OSSEC-HIDS 2.7 through 3.5.0, the OSCleanMSG 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, i...

CVE-2020-8446: Improper Limitation of a Pathname to a Restricted Directory

In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis ossec-analysisd is vulnerable to path traversal with write access via crafted syscheck messages written directly to the analysisd UNIX domain socket by a local user...

PT-2020-20146 · Trend Micro · Ossec-Hids

Name of the Vulnerable Software and Affected Versions: OSSEC-HIDS versions 2.7 through 3.5.0 Description: The server component responsible for log analysis, ossec-analysisd, is vulnerable to path traversal with write access via crafted syscheck messages written directly to the analysisd UNIX doma...

PT-2020-20142 · Trend Micro · Ossec-Hids

Name of the Vulnerable Software and Affected Versions: OSSEC-HIDS versions 2.7 through 3.5.0 Description: The server component responsible for log analysis, ossec-analysisd, is vulnerable to a heap-based buffer overflow in the rootcheck decoder component via an authenticated client...

CVE-2020-8442: Out-of-bounds Write

In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis ossec-analysisd is vulnerable to a heap-based buffer overflow in the rootcheck decoder component via an authenticated client...

OSSEC-HIDS Security Audit Findings

Hi folks, I spent some free time recently auditing OSSEC. I w...

Open Source Host & Endpoint Security: Wazuh

Wazuh is a security detection, visibility, and compliance open source project. It was born as a fork of OSSEC HIDS, later was integrated with Elastic Stack and OpenSCAP evolving into a more comprehensive solution. Wazuh helps you to gain deeper security visibility into your infrastructure by...

OSSEC 2.8.1 Local Root Escalation

Fix for CVE-2015-3222 which allows for root escalation via syscheck - https://github.com/ossec/ossec-hids/releases/tag/2.8.2 Affected versions: 2.7 - 2.8.1 Beginning is OSSEC 2.7 d88cf1c9 a feature was added to syscheck, which is the daemon that monitors file changes on a system, called...

OSSEC 2.7 < 2.8.1 - 'diff' Local Privilege Escalation

Fix for CVE-2015-3222 which allows for root escalation via syscheck - https://github.com/ossec/ossec-hids/releases/tag/2.8.2 Affected versions: 2.7 - 2.8.1 Beginning is OSSEC 2.7 d88cf1c9 a feature was added to syscheck, which is the daemon that monitors file changes on a system, called...

FreeBSD : security/ossec-hids-* -- root escalation via temp files (36858e78-3963-11e4-ad84-000c29f6ae42)

OSSEC reports : This correction will create the temp file for the hosts deny file in /var/ossec and will use mktemp where available to create NON-predictable temp file name. In cases where mktemp is not available we have written a BAD version of mktemp, but should be a little better then just...