# CVE-2024-11862: Devolutions.XTS.NET Vulnerable to Timing Attack on GF Multiplications

> Timing attacks in Devolutions.XTS.NET allow attackers to recover half of the encryption key, compromising data confidentiality.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 Nov 2024
- **Updated:** 27 Nov 2024
- **Also known as:** GHSA-j6vm-4r7g-x4gr

## What is CVE-2024-11862?

CVE-2024-11862 is a medium-severity vulnerability in Devolutions XTS.NET, published on 27 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Non constant time cryptographic operation in Devolutions.XTS.NET 2024.11.19 and earlier allows an attacker to render half of the encryption key obsolete via a timing attacks

Weakness: CWE-385 (Covert Timing Channel)

## Which versions are affected by CVE-2024-11862?

2 open source packages ship an affected version, including Devolutions.XTS.NET.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Devolutions.XTS.NET` | NuGet | All versions | 2024.11.26 |
| `Devolutions.XTS.NET` | NuGet | All versions | 2024.11.26 |

## How do I fix CVE-2024-11862?

Upgrade Devolutions.XTS.NET to 2024.11.26 or later.

## Is CVE-2024-11862 being exploited?

There is no known exploitation of CVE-2024-11862 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-11862 and fix it if it is affected.

What it is: CVE-2024-11862 is a medium-severity vulnerability in Devolutions XTS.NET, published on 27 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-11862 in the wild and no public exploit code.

Affected packages and fixed versions:
- Devolutions.XTS.NET (NuGet): affected all versions; fixed in 2024.11.26
- Devolutions.XTS.NET (NuGet): affected all versions; fixed in 2024.11.26

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-11862/ (Markdown: https://insights.sbomify.com/CVE-2024-11862/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-11862
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-11862
- OSV: https://osv.dev/vulnerability/CVE-2024-11862

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-11862/
Summaries are generated and may contain mistakes; the official description above is the record.