PT-2020-20148 · Trend Micro · Ossec-Hids

Published 2020-01-30 · Updated 2022-09-12 · CVE-2020-8448

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OSSEC-HIDS versions 2.7 through 3.5.0

Description The issue affects the server component responsible for log analysis, ossec-analysisd, which is vulnerable to a denial of service due to a NULL pointer dereference. This can be triggered by crafted messages written directly to the analysisd UNIX domain socket by a local user.

Recommendations For OSSEC-HIDS versions 2.7 through 3.5.0, consider restricting access to the analysisd UNIX domain socket to prevent local users from sending crafted messages until a patch is available. As a temporary workaround, consider disabling the ossec-analysisd component until a fix is provided to prevent potential denial of service attacks.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2020-8448

Affected Products

Ossec-Hids

References · 7

• 🔥 https://github.com/ossec/ossec-hids/issues/1815 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-8448 · Security Note
• https://ossec.net · Vendor Advisory
• https://security.gentoo.org/glsa/202007-33 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-8448 · Vendor Advisory
• https://github.com/ossec/ossec-hids/issues/1821 · Note
• https://t.me/cvenotify/641 · Telegram Post