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CVE-2024-23722

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP...

7.5 HighPublic exploitFix available

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.95%Up 0.9 points since Mar 27, 2024
90%50%10%1%

What each source reports

CVE List Score used 7.5

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
CVE-2024-23722
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
EUVDEUVD-2024-21183 7.5

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
EUVD-2024-21183
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-7x4x-j7vx-3p29 7.5

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP...

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
GHSA-7x4x-j7vx-3p29
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
NVD 7.5

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
CVE-2024-23722
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSV 7.5

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
CVE-2024-23722
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2024-23722 7.5

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
UBUNTU-CVE-2024-23722
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-37083 No score

CVE-2024-23722 affecting package fluent-bit for versions less than 2.2.2-1

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
AZL-37083
Updated
2026-11-02
OSVBIT-fluent-bit-2024-23722 No score

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Record
BIT-fluent-bit-2024-23722
Updated
2026-11-02
OSVUSN-7250-1 No score

netdata vulnerabilities

It was discovered that Netdata incorrectly handled parsing JSON input, which could lead to a JSON injection. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-18836)

It was discovered that Netdata incorrectly handled parsing HTTP headers, which could lead to a HTTP header injection. An attacker could possibly use this issue to cause a denial of service or leak sensitive information. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-18837)

It was discovered that Netdata incorrectly handled parsing URLs, which could lead to a log injection. An attacker could possibly use this issue to consume system resources, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-18838)

It was discovered Netdata improperly authenticated API keys. An attacker could possibly use this issue to leak sensitive information or execute arbitrary code. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-22497)

It was discovered Fluent Bit, vendored in Netdata, incorrectly handled parsing HTTP payloads. An attacker could possibly use this issue to disrupt logging. This issue only affected Ubuntu 24.10. (CVE-2024-23722)

It was discovered that WebAssembly Micro Runtime, vendored in Netdata, incorrectly handled memory. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.10. (CVE-2024-34250, CVE-2024-34251)

Record
USN-7250-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
fluent-bit
Azure Linux:2
before 2.2.2-1
2.2.2-1
fluent-bit
Bitnami
2.1.8 up to 2.2.2
2.2.2
netdata
Ubuntu:Pro:18.04:LTS
From an advisory covering 5 CVEs
before 1.9.0+dfsg-1ubuntu0.1~esm1, plus listed versions
1.7.0+dfsg-11.8.0+dfsg-11.9.0+dfsg-1
1.9.0+dfsg-1ubuntu0.1~esm1
netdata
Ubuntu:Pro:20.04:LTS
From an advisory covering 5 CVEs
before 1.19.0-3ubuntu1+esm1, plus listed versions
1.16.1-21.19.0-3ubuntu1
1.19.0-3ubuntu1+esm1
netdata
Ubuntu:Pro:22.04:LTS
From an advisory covering 5 CVEs
before 1.33.1-1ubuntu1+esm1, plus listed versions
1.29.3-41.31.0-41.33.1-1ubuntu1
1.33.1-1ubuntu1+esm1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubalexcote1/CVE-2024-23722-poc2024-03-25

History

History
RecordedChangedSources
affected, facts
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-23722 is a high vulnerability (CVSS 7.5) in Fluent Bit, published March 26, 2024. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.95%, the 61st percentile. Fixed in fluent-bit 2.2.2-1.

References

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