Off-by-One Heap Buffer Overflow in OSSEC-HIDS Log Analysis Component
CVE-2020-8443

9.8CRITICAL

Key Information:

Vendor

Ossec

Status
Ossec
Vendor
CVE Published:
30 January 2020

What is CVE-2020-8443?

The OSSEC-HIDS product versions 2.7 through 3.5.0 are affected by an off-by-one heap-based buffer overflow vulnerability. This occurs in the ossec-analysisd server component during the processing of crafted syslog messages that are received from authenticated remote agents. The flaw can lead to potential data corruption and can be exploited by sending specially crafted syslog messages to the analysisd processing queue via ossec-remoted.

References

https://github.com/ossec/ossec-hids/issues/1821
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https://www.ossec.net/
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https://github.com/ossec/ossec-hids/issues/1816
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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