RUSTSEC-2021-0014

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Source

https://rustsec.org/advisories/RUSTSEC-2021-0014

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2021-0014.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2021-0014

Aliases

Published

2021-01-26T12:00:00Z

Modified

2023-11-08T04:05:20.909149Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

Record::read : Custom `Read` on uninitialized buffer may cause UB

Details

Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation. (Record::read())

Arbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.

This flaw was fixed in commit 6299af0 by zero-initializing the newly allocated memory (via data.resize(len, 0)) instead of exposing uninitialized memory (unsafe { data.set_len(len) }).

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / marc

Package

Name: marc; View open source insights on deps.dev
Purl: pkg:cargo/marc

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

2.0.0

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

Database specific

{
    "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
    "informational": null,
    "categories": [
        "memory-exposure"
    ]
}