PT-2025-6703 · Unknown+1 · Fluent-Bit+1
Faran Abdullah
·
Published
2025-02-18
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Updated
2025-04-23
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CVE-2024-50609
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Fluent Bit version 3.1.9
Description
An issue was discovered in Fluent Bit when the OpenTelemetry input plugin is running and listening on an IP address and port. A user with access to the endpoint can send a packet with
Content-Length: 0 and crash the server, allowing for a remote Denial of Service attack. The crash occurs due to a NULL pointer dereference when 0 (from the Content-Length) is passed to the function cfl sds len(), which tries to cast a NULL pointer into struct cfl sds. This is related to the process payload traces proto ng() function at opentelemetry prot.c.Recommendations
As a temporary workaround, consider disabling the OpenTelemetry input plugin until a patch is available. Restrict access to the vulnerable endpoint to minimize the risk of exploitation. Avoid sending packets with
Content-Length: 0 to the affected server until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Fluent-Bit