Buffer Overflow Vulnerability in Filebeat Syslog Parser by Elastic

CVE-2025-68383

What is CVE-2025-68383?

A vulnerability exists within the Filebeat Syslog parser and the Libbeat Dissect processor that stems from improper validation techniques. This issue can be exploited by sending a specially crafted Syslog message or using a malicious tokenizer pattern in the Dissect configuration. Successful exploitation may lead to a buffer overflow, resulting in a denial of service condition, where the Filebeat process may crash or panic, compromising system availability.

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