CVE-2024-23531
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn Integer Overflow vulnerability in WLInfoRailService component of Ivanti Avalanche before 6.4.3 allows an unauthenticated remote attacker to perform denial of service attacks. In certain rare conditions this could also lead to reading content from memory.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceInteger overflow vulnerability in WLInfoRailService component of Ivanti Avalanche before version 6.4.3 allows unauthenticated remote attackers to cause denial of service, with potential memory content disclosure under rare conditions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 6.4.3.528CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Ivanti Avalanche is installedLocate Ivanti Avalanche installation directory or check installed programs list on the systemAffected if Ivanti Avalanche software is present on the host
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Identify installed Avalanche versionCheck the version of Ivanti Avalanche by examining the application properties, about dialog, or version file in the installation directoryAffected if Installed version is less than 6.4.3.528 (for example, 6.4.2.x or earlier)
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Verify WLInfoRailService component statusCheck if the WLInfoRailService is running as a Windows service or daemon process on the systemAffected if WLInfoRailService component is active and the version is below 6.4.3.528
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Check network exposure of Avalanche servicesReview firewall rules and network configuration to determine if the Avalanche server or WLInfoRailService port is accessible from untrusted networksAffected if The service is exposed to unauthenticated remote network attackers
A system is affected if Ivanti Avalanche with WLInfoRailService is running and the installed version is earlier than 6.4.3.528.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped6.4.3.528
Upgrade Ivanti Avalanche to version 6.4.3 or later to remediate this vulnerability.
6.4.3.528 or later
- Backup the current Ivanti Avalanche installation and database before proceeding with the upgrade
- Download Ivanti Avalanche version 6.4.3.528 or later from the official Ivanti support portal (forums.ivanti.com)
- Stop all Avalanche services including WLInfoRailService
- Install the upgrade following Ivanti's standard upgrade procedures for the 6.4.3 release
- Verify the installed version is 6.4.3.528 or later after upgrade completes
- Restart Avalanche services and confirm the WLInfoRailService component is running normally
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-23531 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-23531 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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