CVE-2020-8443

Public Exploit

Description

In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis (ossec-analysisd) is vulnerable to an off-by-one heap-based buffer overflow during the cleaning of crafted syslog msgs (received from authenticated remote agents and delivered to the analysisd processing queue by ossec-remoted).

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.76% Top 30%
Vendor Advisory gentoo.org Vendor Advisory ossec.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/ossec/ossec-hids/issues/1821 third party advisory
https://www.ossec.net/ vendor advisory
https://github.com/ossec/ossec-hids/issues/1816 third party advisory exploit
https://security.gentoo.org/glsa/202007-33 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-8443?
CVE-2020-8443 has been scored as a critical severity vulnerability.
How to fix CVE-2020-8443?
To fix CVE-2020-8443, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-8443 being actively exploited in the wild?
It is possible that CVE-2020-8443 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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