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Deno improperly handles resizable ArrayBuffer

Critical severity GitHub Reviewed Published Mar 23, 2023 in denoland/deno • Updated May 4, 2023

Package

cargo Deno (Rust)

Affected versions

= 1.32.0

Patched versions

1.32.1
cargo deno_runtime (Rust)
= 0.102.0
0.103.0
cargo serde_v8 (Rust)
= 0.87.0
0.88.0

Description

Impact

Resizable ArrayBuffers passed to asynchronous native functions that are shrunk during the asynchronous operation could result in an out-of-bound read/write.

It is unlikely that this has been exploited in the wild, as the only version affected is Deno 1.32.0.

Deno Deploy users are not affected.

Patches

The problem has been resolved by disabling resizable ArrayBuffers temporarily in Deno 1.32.1. A future version of Deno will re-enable resizable ArrayBuffers with a proper fix.

Workarounds

Upgrade to Deno 1.32.1, or run with --v8-flags=--no-harmony-rab-gsab to disable resizable ArrayBuffers.

References

@lucacasonato lucacasonato published to denoland/deno Mar 23, 2023
Published to the GitHub Advisory Database Mar 23, 2023
Reviewed Mar 23, 2023
Published by the National Vulnerability Database Mar 24, 2023
Last updated May 4, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS score

0.316%
(70th percentile)

Weaknesses

CVE ID

CVE-2023-28445

GHSA ID

GHSA-c25x-cm9x-qqgx

Source code

Credits

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