Actix WebApplication · Actix

CVE-2018-25024

CRITICAL · 9.8 CVSS v3.1 Published 2021-12-27
Fix available
A fix is available. Upgrade to 0.7.15 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
An issue was discovered in the actix-web crate before 0.7.15 for Rust. It can unsoundly coerce an immutable reference into a mutable reference, leading to memory corruption.

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 confidence

The actix-web crate before version 0.7.15 contains a soundness bug that allows immutable references to be unsafely coerced into mutable references, violating Rust's memory safety guarantees. This undefined behavior can lead to memory corruption and potential remote code execution. The vulnerability is a critical design flaw in the crate's internal reference handling.

MitigationUpgrade the actix-web crate to version 0.7.15 or later to obtain the patched version that properly enforces Rust's reference soundness rules.

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
Actix WebApplication
Affected:< 0.7.15

CVSS 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
High
Integrity
High
Availability
High

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

Work through these to decide whether this CVE applies to you.

  1. Locate actix-web dependency in your project
    Search your project's Cargo.toml file for 'actix-web' or 'actix' in the dependencies section, or check Cargo.lock for the actix-web entry
    Affected if The actix-web crate is listed as a dependency
  2. Determine the installed actix-web version
    Check the version number next to actix-web in Cargo.toml or the version entry in Cargo.lock (look for name = "actix-web" and the corresponding version field)
    Affected if The version number is less than 0.7.15 (e.g., 0.7.14, 0.7.13, 0.6.x, etc.)
  3. Verify the application uses actix-web handlers
    Inspect your source code for actix-web web::block, web::Data, or handler functions that process HTTP requests using actix-web actix::Handler implementations
    Affected if The application uses actix-web web handlers that could trigger the unsound reference coercion

Your environment is affected if actix-web crate version less than 0.7.15 is present in your project dependencies and is used at runtime.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 0.7.15 or later
Fixed in 0.7.15
Interim mitigation

Upgrade the actix-web crate to version 0.7.15 or later to obtain the patched version that properly enforces Rust's reference soundness rules.

Recommended fix High confidence

actix-web 0.7.15

  1. Open your project's Cargo.toml file
  2. Locate the actix-web dependency declaration (e.g., actix-web = "0.7")
  3. Update the version to 0.7.15 or later (e.g., actix-web = "0.7.15")
  4. Run `cargo update actix-web` to update Cargo.lock
  5. Run `cargo build` to rebuild with the fixed version
  6. Verify the installed version using `cargo tree | grep actix-web`
Caveat Minor version upgrade within 0.7.x may have limited breaking changes, but test thoroughly as this is a web framework

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Actix Web Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,720
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,752.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2018-25024 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
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  • Version or environment caveats, and links to real fixes
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