Acc ReaderApplication · Acc Reader Project

CVE-2020-36513

CRITICAL · 9.8 CVSS v3.1 Published 2021-12-27
Fix available
A fix is available. Upgrade to after 2.0.0 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 acc_reader crate through 2020-12-27 for Rust. read_up_to may read from uninitialized memory locations.

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 confidence

The acc_reader Rust crate has a memory safety vulnerability in the read_up_to function, which may read from uninitialized memory locations. This can lead to information disclosure of sensitive data from memory or undefined behavior, which could potentially be exploited for more severe attacks.

MitigationUpdate to a patched version of the acc_reader crate if available; otherwise, review and ensure any buffers passed to read_up_to are properly initialized before use.

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
Acc ReaderApplication
Affected:<= 2.0.0

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 the acc_reader crate in your project dependencies
    Search your project's Cargo.toml and Cargo.lock files for 'acc_reader' or 'acc_reader' crate references
    Affected if The crate is listed as a dependency in your project
  2. Identify the installed version of acc_reader
    Check the version number specified next to acc_reader in Cargo.lock, or run 'cargo tree -p acc_reader' to see the exact version
    Affected if The version is 2.0.0 or lower (any version <= 2.0.0)
  3. Determine if read_up_to function is called in your code
    Search your codebase for any invocations of read_up_to function, typically in the pattern acc_reader::read_up_to or similar module-qualified calls
    Affected if Your code calls the read_up_to function from the acc_reader crate
  4. Check if buffers passed to read_up_to may be uninitialized
    Review all call sites where read_up_to is used and inspect whether the buffer parameter is initialized (filled with values) before being passed to the function
    Affected if Buffers passed to read_up_to are not initialized with a defined value before the call

Your environment is affected if the acc_reader crate version is 2.0.0 or lower AND your code uses the read_up_to function with potentially uninitialized buffers

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.

From vendor data
Upgrade available Upgrade to a release after 2.0.0
Interim mitigation

Update to a patched version of the acc_reader crate if available; otherwise, review and ensure any buffers passed to read_up_to are properly initialized before use.

Fix this in Acc Reader Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
Get the upgrade done

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Scan for this in your stack

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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-2020-36513 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
  • 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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