Denial of service in Fluent Bit

1) NULL pointer dereference

EUVDB-ID: #VU88884

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-23722

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via an invalid HTTP payload with the content type of x-www-form-urlencoded.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Fluent Bit: 2.1.8 - 2.2.1

CPE2.3

• cpe:2.3:a:fluentbit.io:fluentbit:2.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:fluentbit.io:fluentbit:2.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:fluentbit.io:fluentbit:2.1.10:*:*:*:*:*:*:*

External links

https://github.com/fluent/fluent-bit/compare/v2.2.1...v2.2.2
https://medium.com/%40adurands82/fluent-bit-dos-vulnerability-cve-2024-23722-4e3e74af9d00

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.