CVE-2020-8443

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).

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.ossec.net/	Vendor Advisory
https://github.com/ossec/ossec-hids/issues/1816	Exploit Third Party Advisory
https://github.com/ossec/ossec-hids/issues/1821	Third Party Advisory
https://security.gentoo.org/glsa/202007-33	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:ossec:ossec:*:*:*:*:*:*:*:*

Information

Published : 2020-01-29 17:15

Updated : 2022-04-26 13:00

NVD link : CVE-2020-8443

Mitre link : CVE-2020-8443

JSON object : View

CWE

CWE-787

Out-of-bounds Write

CWE-193

Off-by-one Error

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Products Affected

ossec

ossec

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