CVE-2018-20995
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 issue was discovered in the slice-deque crate before 0.1.16 for Rust. move_head_unchecked allows memory corruption because deque updates are mishandled.
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 · moderate confidenceA memory corruption vulnerability exists in the slice-deque Rust crate before version 0.1.16. The move_head_unchecked function improperly handles deque updates, leading to memory corruption that could allow attackers to execute arbitrary code or cause denial of service.
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< 0.1.16CVSS 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:3.0/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 checksWork through these to decide whether this CVE applies to you.
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Locate slice-deque dependency in your projectSearch your Cargo.toml and Cargo.lock files for 'slice-deque' or 'slice_deque' entries. Also check any Cargo.lock files in dependent crates.Affected if slice-deque is present as a direct or transitive dependency
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Determine the installed version of slice-dequeRead the version number next to slice-deque in Cargo.lock, or run 'cargo tree -p slice-deque' to see the resolved version.Affected if The version is less than 0.1.16 (for example, 0.1.15, 0.1.14, etc.)
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Check if the deque is used with operations that trigger move_head_uncheckedReview your code for uses of slice-deque'sDeque struct, particularly methods that manipulate the head of the deque such as push_front, pop_front, or similar head-modifying operations.Affected if Your code uses deque operations that internally call move_head_unchecked and the crate version is below 0.1.16
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Verify the vulnerable function is reachable in your buildSearch your compiled binary or dependencies for references to 'move_head_unchecked' using 'cargo nm your_binary | grep move_head_unchecked' or by examining the crate source if vendored.Affected if The symbol move_head_unchecked appears in your binary's symbols and the crate version is vulnerable
You are affected if slice-deque version below 0.1.16 is present in your dependency tree and your code uses deque operations that invoke the move_head_unchecked function.
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 · scoped0.1.16
Upgrade the slice-deque crate to version 0.1.16 or later. Review all code paths that use the affected deque operations and run comprehensive tests to ensure the update does not introduce regressions.
slice-deque version 0.1.16 or later
- Locate your project's Cargo.toml file that declares slice-deque as a dependency
- Update the slice-deque version constraint to "0.1.16" or later (e.g., slice-deque = "0.1.16")
- Run `cargo update slice-deque` to refresh the Cargo.lock file
- Run `cargo build` or `cargo test` to verify the application compiles and tests pass with the updated dependency
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-20995 — 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-2018-20995 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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- Version or environment caveats, and links to real fixes
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