CVE-2024-21538VulnerabilityPublished 12 Dec 2024Updated 30 Oct 2026

Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.17.1 Bug Fix Update

Affects Red HatSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 20:25 UTC

Severity

Low

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Dec 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

Description

Red Hat OpenShift Data Foundation is software-defined storage integrated with and optimized for the Red Hat OpenShift Data Foundation. Red Hat OpenShift Data Foundation is a highly scalable, production-grade persistent storage for stateful applications running in the Red Hat OpenShift Container Platform. In addition to persistent storage, Red Hat OpenShift Data Foundation provisions a multi-cloud data management service with an S3 compatible API. Security Fix(es): * cross-spawn: regular expression denial of service (CVE-2024-21538) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Bug fixes: Previously, as part of monitoring the health of NamespaceStores, Multicloud Object Gateway (MCG) counted the I/O errors. This included read errors that occurred when the read failed due to no object existing. However, these errors should not be counted towards I/O failures as some clients use this type of read errors to find out whether an object exists. With this fix, these specific types of errors such as Read, No Such Object are not counted as I/O errors. (JIRA#DFBUGS-834) Previously, Ceph S3 object stores in OpenShift Data Foundation external mode needed to rotate certificates each time the RADOS Gateway (RGW) rotated. With this fix, well-known certificate authorities (CAs) are used to attempt the authentication of Ceph RGW daemons. The well-known CAs are determined based on Red Hat base container image’s certificates’ RPM package. The enables OpenShift Data Foundation to continue to operate in a healthy status. (JIRA#DFBUGS-825) Previously, in some cases, a race between an incomplete multipart upload that would later be cancelled and a new multipart upload of the same object would be deduped togetehr causing inconsistencies in object mapping and making it unavailable to read. With this fix, the Multicloud Object Gateway deduplication issue is resolved. (JIRA#DFBUGS-356) All users of Red Hat OpenShift Data Foundation are advised to upgrade to these updated images, which provide these bug fixes.

CWE-1333Inefficient Regular Expression Complexity (opens in a new tab)
Base weaknessLikelihood of exploit: High
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Architecture and Design
Use regular expressions that do not support backtracking, e.g. by removing nested quantifiers.
System Configuration
Set backtracking limits in the configuration of the regular expression implementation, such as PHP's pcre.backtrack_limit. Also consider limits on execution time for the process.
Implementation
Do not use regular expressions with untrusted input. If regular expressions must be used, avoid using backtracking in the expression.
OWASP Cheat Sheets
File Upload (opens in a new tab)
OWASP ASVS 4.0.3
V12.1.1 (opens in a new tab)
Attack patterns
Regular Expression Exponential Blowup (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

Description

WeaknessesCWE-1333

Technical details

References

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