RUSTSEC-2021-0027

See a problem?
Please try reporting it to the source first.

Source

https://rustsec.org/advisories/RUSTSEC-2021-0027

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2021-0027.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2021-0027

Aliases

CVE-2021-28027
GHSA-cpqj-r29q-chrh

Published

2021-01-07T12:00:00Z

Modified

2023-11-08T04:05:27.546593Z

Severity

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

Summary

Loading a bgzip block can write out of bounds if size overflows.

Details

Affected versions of bam set the length of an internal buffer using self.compressed.set_len(block_size - HEADER_SIZE - MIN_EXTRA_SIZE) and then wrote into it. While block_size was constrained to a proper maximum, when it was too small the subtraction could overflow negatively to a large number past the capacity of self.compressed.

This can result in memory corruption in the form of writing out of bounds when loading a bgzip file with a small block_size.

Commit 061eee38d4 fixed this issue by checking for the underflow when setting the buffer size.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / bam

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.1.3

Ecosystem specific

{
    "affects": {
        "functions": [
            "bam::bgzip::Block::load"
        ],
        "arch": [],
        "os": []
    },
    "affected_functions": null
}

Database specific

source

"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2021-0027.json"

informational

null

cvss

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