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@grpc/grpc-js can allocate memory for incoming messages well above configured limits

Moderate severity GitHub Reviewed Published Jun 10, 2024 in grpc/grpc-node • Updated Jun 11, 2024

Package

npm @grpc/grpc-js (npm)

Affected versions

>= 1.10.0, < 1.10.9
>= 1.9.0, < 1.9.15
< 1.8.22

Patched versions

1.10.9
1.9.15
1.8.22

Description

Impact

There are two separate code paths in which memory can be allocated per message in excess of the grpc.max_receive_message_length channel option:

  1. If an incoming message has a size on the wire greater than the configured limit, the entire message is buffered before it is discarded.
  2. If an incoming message has a size within the limit on the wire but decompresses to a size greater than the limit, the entire message is decompressed into memory, and on the server is not discarded.

Patches

This has been patched in versions 1.10.9, 1.9.15, and 1.8.22

References

@murgatroid99 murgatroid99 published to grpc/grpc-node Jun 10, 2024
Published to the GitHub Advisory Database Jun 10, 2024
Reviewed Jun 10, 2024
Published by the National Vulnerability Database Jun 10, 2024
Last updated Jun 11, 2024

Severity

Moderate

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
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.046%
(19th percentile)

Weaknesses

CVE ID

CVE-2024-37168

GHSA ID

GHSA-7v5v-9h63-cj86

Source code

Credits

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