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columnar: Read on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())

Critical severity GitHub Reviewed Published Jan 6, 2022 to the GitHub Advisory Database • Updated Jun 13, 2023

Package

cargo columnar (Rust)

Affected versions

<= 0.0.19

Patched versions

None

Description

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

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.

References

Published by the National Vulnerability Database Dec 27, 2021
Reviewed Jan 6, 2022
Published to the GitHub Advisory Database Jan 6, 2022
Last updated Jun 13, 2023

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
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

Weaknesses

CVE ID

CVE-2021-45685

GHSA ID

GHSA-9mp7-45qh-r8j8

Source code

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