VulnerabilityPublished 27 Mar 2024Updated 23 Sep 2026

CVE-2024-1023: Red Hat Cryostat 2 on RHEL 8 · Memory Leak

Affects Red Hat Cryostat 2 on RHEL 8Source CVE Database V5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 11:42 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 1.6% chance of exploitation in 30 days – higher than 76% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Mar 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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.

What to do

Affected software

Product	Affected	Fixed in
Red HatCEQ 3.2	Affected–	Fixed in–
Red HatCryostat 2 on RHEL 8	Affected–	Fixed in–
Red HatCryostat 2 on RHEL 8	Affected–	Fixed in–
Red HatCryostat 2 on RHEL 8	Affected–	Fixed in–
Red HatMTA-6.2-RHEL-9	Affected–	Fixed in–
Red HatRed Hat AMQ Streams 2.7.0	Affected–	Fixed in–

AI-suggested

Red Hat has released security updates for their build of Quarkus (version 3.2.11) and related products that address CVE-2024-1023. Users should apply these official patches as soon as possible. Before applying updates, it is recommended to back up existing installations, including applications, configuration files, and databases. No alternative mitigations or workarounds are indicated in the vendor advisories. Patch status is confirmed as fixed in the updated Red Hat packages.

Description

A vulnerability in the Eclipse Vert.x toolkit results in a memory leak due to using Netty FastThreadLocal data structures. Specifically, when the Vert.x HTTP client establishes connections to different hosts, triggering the memory leak. The leak can be accelerated with intimate runtime knowledge, allowing an attacker to exploit this vulnerability. For instance, a server accepting arbitrary internet addresses could serve as an attack vector by connecting to these addresses, thereby accelerating the memory leak.

Impact

The vulnerability results in a memory leak that can degrade system performance and availability by exhausting memory resources. It does not directly impact confidentiality or integrity but can cause denial of service conditions due to resource exhaustion. There are no known exploits in the wild at this time. The vulnerability requires network access and low complexity to exploit, with no user interaction needed.

Summary

The vulnerability CVE-2024-1023 affects Eclipse Vert.x, specifically its HTTP client implementation, where a memory leak arises from the use of Netty FastThreadLocal data structures that are not properly released after their effective lifetime. This leak is triggered when connections are made to different hosts and can be accelerated by an attacker with intimate runtime knowledge. The issue is documented with a CVSS v3.1 score of 6.5 (medium severity) and is included in Red Hat advisories for their build of Quarkus and Apache Camel for Quarkus. Multiple Red Hat errata provide updates and fixes addressing this memory leak.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Aug 2026, 13:29 UTC

Technical details

References

Community reviews

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