GHSA-496j-2rq6-j6cc

Source

https://github.com/advisories/GHSA-496j-2rq6-j6cc

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/08/GHSA-496j-2rq6-j6cc/GHSA-496j-2rq6-j6cc.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-496j-2rq6-j6cc

Aliases

CVE-2023-33953

Published

2023-08-09T15:30:15Z

Modified

2024-07-30T21:46:22.811443Z

Severity

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

Summary

Excessive Iteration in gRPC

Details

gRPC contains a vulnerability that allows hpack table accounting errors could lead to unwanted disconnects between clients and servers in exceptional cases/ Three vectors were found that allow the following DOS attacks:

Unbounded memory buffering in the HPACK parser
Unbounded CPU consumption in the HPACK parser

The unbounded CPU consumption is down to a copy that occurred per-input-block in the parser, and because that could be unbounded due to the memory copy bug we end up with an O(n^2) parsing loop, with n selected by the client.

The unbounded memory buffering bugs:

The header size limit check was behind the string reading code, so we needed to first buffer up to a 4 gigabyte string before rejecting it as longer than 8 or 16kb.
HPACK varints have an encoding quirk whereby an infinite number of 0’s can be added at the start of an integer. gRPC’s hpack parser needed to read all of them before concluding a parse.
gRPC’s metadata overflow check was performed per frame, so that the following sequence of frames could cause infinite buffering: HEADERS: containing a: 1 CONTINUATION: containing a: 2 CONTINUATION: containing a: 3 etc…

Database specific

{
    "nvd_published_at": "2023-08-09T13:15:09Z",
    "cwe_ids": [
        "CWE-770",
        "CWE-789"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2024-07-30T10:26:43Z"
}

References

Affected packages

PyPI / grpcio

Package

Name: grpcio; View open source insights on deps.dev
Purl: pkg:pypi/grpcio

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.53.2

Affected versions

0.*

0.3.0

0.4.0a0

0.4.0a1

0.4.0a2

0.4.0a3

0.4.0a4

0.4.0a5

0.4.0a6

0.4.0a7

0.4.0a8

0.4.0a13

0.4.0a14

0.4.0

0.5.0a0

0.5.0a1

0.5.0a2

0.9.0a0

0.9.0a1

0.10.0a0

0.11.0b0

0.11.0b1

0.12.0b0

0.12.0b8

0.13.0

0.13.1rc1

0.13.1

0.14.0rc1

0.14.0

0.15.0

1.*

1.0.0rc1

1.0.0rc2

1.0.0

1.0.1rc1

1.0.1

1.0.2

1.0.3

1.0.4

1.1.0

1.1.3

1.2.0

1.2.1

1.3.0

1.3.3

1.3.5

1.4.0

1.6.0

1.6.3

1.7.0

1.7.3

1.8.1

1.8.2

1.8.3

1.8.4

1.8.6

1.9.0rc1

1.9.0rc2

1.9.0rc3

1.9.0

1.9.1

1.10.0rc2

1.10.0

1.10.1rc1

1.10.1rc2

1.10.1

1.11.0rc1

1.11.0rc2

1.11.0

1.11.1rc1

1.11.1

1.12.0rc1

1.12.0

1.12.1

1.13.0rc1

1.13.0rc2

1.13.0rc3

1.13.0

1.14.0rc1

1.14.0rc2

1.14.0

1.14.1

1.14.2rc1

1.14.2

1.15.0rc1

1.15.0

1.16.0rc1

1.16.0

1.16.1

1.17.0

1.17.1

1.18.0

1.19.0

1.20.0rc1

1.20.0rc2

1.20.0rc3

1.20.0

1.20.1

1.21.0rc1

1.21.1rc1

1.21.1

1.22.0rc1

1.22.0

1.22.1

1.23.0rc1

1.23.0

1.23.1

1.24.0rc1

1.24.0

1.24.1

1.24.3

1.25.0rc1

1.25.0

1.26.0rc1

1.26.0

1.27.0rc1

1.27.0rc2

1.27.1

1.27.2

1.28.0rc1

1.28.0rc2

1.28.1

1.29.0

1.30.0

1.31.0

1.32.0

1.33.1

1.33.2

1.34.0rc1

1.34.0

1.34.1

1.35.0rc1

1.35.0

1.36.0rc1

1.36.0

1.36.1

1.37.0rc1

1.37.0

1.37.1

1.38.0rc1

1.38.0

1.38.1

1.39.0rc1

1.39.0

1.40.0rc1

1.40.0

1.41.0rc2

1.41.0

1.41.1

1.42.0rc1

1.42.0

1.43.0rc1

1.43.0

1.44.0rc1

1.44.0rc2

1.44.0

1.45.0rc1

1.45.0

1.46.0rc1

1.46.0rc2

1.46.0

1.46.1

1.46.3

1.46.5

1.47.0rc1

1.47.0

1.47.2

1.47.5

1.48.0rc1

1.48.0

1.48.1

1.48.2

1.49.0rc1

1.49.0rc3

1.49.0

1.49.1

1.50.0rc1

1.50.0

1.51.0rc1

1.51.0

1.51.1

1.51.3

1.52.0rc1

1.52.0

1.53.0rc2

1.53.0

1.53.1

PyPI / grpcio

Package

Name: grpcio; View open source insights on deps.dev
Purl: pkg:pypi/grpcio

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.54.0

Fixed

1.54.3

Affected versions

1.*

1.54.0

1.54.2

PyPI / grpcio

Package

Name: grpcio; View open source insights on deps.dev
Purl: pkg:pypi/grpcio

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.55.0

Fixed

1.55.2

Affected versions

1.*

1.55.0

PyPI / grpcio

Package

Name: grpcio; View open source insights on deps.dev
Purl: pkg:pypi/grpcio

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.56.0

Fixed

1.56.2

Affected versions

1.*

1.56.0

RubyGems / grpc

Package

Name: grpc
Purl: pkg:gem/grpc

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.53.2

Affected versions

0.*

0.5.0

0.6.0

0.6.1

0.9.2

0.9.3

0.9.4

0.10.0

0.11.0

0.12.0

0.13.0.pre1.1

0.13.0

0.13.1.pre1

0.13.1

0.14.1.pre1

0.14.1

0.15.0

1.*

1.0.0.pre1

1.0.0.pre2

1.0.0

1.0.1.pre1

1.0.1

1.1.2

1.2.0.pre1

1.2.0

1.2.1.pre1

1.2.1.pre2

1.2.2

1.2.5

1.3.4

1.4.0

1.4.1

1.4.5

1.6.0.pre1

1.6.0

1.6.2

1.6.4

1.6.6

1.6.7

1.7.0.pre1

1.7.0

1.7.1

1.7.2

1.7.3

1.8.0

1.8.3

1.8.6

1.8.7

1.9.0.pre1

1.9.0.pre2

1.9.0.pre3

1.9.1

1.10.0.pre1

1.10.0.pre2

1.10.0

1.11.0.pre2

1.11.0

1.11.1

1.12.0

1.13.0.pre1

1.13.0.pre3

1.13.0

1.14.0

1.14.1

1.14.2.pre1

1.14.2

1.15.0.pre1

1.15.0

1.16.0.pre1

1.16.0

1.17.0.pre1

1.17.0

1.17.1

1.18.0.pre1

1.18.0

1.19.0.pre1

1.19.0

1.20.0.pre1

1.20.0

1.21.0

1.22.0.pre1

1.22.0

1.22.1

1.23.0.pre1

1.23.0

1.23.1

1.24.0.pre1

1.24.0

1.25.0.pre1

1.25.0

1.26.0.pre1

1.26.0

1.27.0.pre1

1.27.0

1.28.0.pre1

1.28.0.pre2

1.28.0

1.30.0.pre1

1.30.0

1.30.1

1.30.2

1.31.0.pre1

1.31.0.pre2

1.31.1

1.32.0.pre1

1.32.0

1.33.0.pre1

1.34.0

1.35.0.pre1

1.35.0

1.36.0

1.37.0.pre1

1.37.0

1.37.1

1.38.0.pre1

1.38.0

1.39.0.pre1

1.39.0

1.40.0.pre1

1.40.0

1.41.0.pre2

1.41.0

1.41.1

1.42.0.pre1

1.42.0

1.43.1

1.44.0.pre2

1.45.0

1.46.2

1.46.3

1.47.0

1.48.0.pre1

1.48.0

1.49.0.pre1

1.49.1

1.50.0.pre1

1.50.0

1.51.0

1.52.0.pre2

1.52.0

1.52.2

1.53.0.pre2

1.53.0

1.53.1

RubyGems / grpc

Package

Name: grpc
Purl: pkg:gem/grpc

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.54.0

Fixed

1.54.3

Affected versions

1.*

1.54.0

1.54.2

RubyGems / grpc

Package

Name: grpc
Purl: pkg:gem/grpc

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.55.0

Fixed

1.55.2

Affected versions

1.*

1.55.0

RubyGems / grpc

Package

Name: grpc
Purl: pkg:gem/grpc

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.56.0

Fixed

1.56.2

Affected versions

1.*

1.56.0