UBUNTU-CVE-2023-33953

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Source
https://ubuntu.com/security/CVE-2023-33953
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-33953.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-33953
Related
Published
2023-08-09T13:15:00Z
Modified
2024-11-20T12:16:58Z
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
[none]
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…

References

Affected packages

Ubuntu:Pro:16.04:LTS / grpc

Package

Name
grpc
Purl
pkg:deb/ubuntu/grpc?arch=src?distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.10.2-1
0.11.1-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / grpc

Package

Name
grpc
Purl
pkg:deb/ubuntu/grpc?arch=src?distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.2-1
1.3.2-1ubuntu1
1.3.2-1.1~build1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / grpc

Package

Name
grpc
Purl
pkg:deb/ubuntu/grpc?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.16.1-1
1.16.1-1ubuntu1
1.16.1-1ubuntu3
1.16.1-1ubuntu4
1.16.1-1ubuntu5

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / grpc

Package

Name
grpc
Purl
pkg:deb/ubuntu/grpc?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.30.2-3
1.30.2-3build1
1.30.2-3build3
1.30.2-3build5
1.30.2-3build6

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / grpc

Package

Name
grpc
Purl
pkg:deb/ubuntu/grpc?arch=src?distro=oracular

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.51.1-4.1build5
1.51.1-4.1build6
1.51.1-4.1build8
1.51.1-4.1ubuntu1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / grpc

Package

Name
grpc
Purl
pkg:deb/ubuntu/grpc?arch=src?distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.51.1-3build3
1.51.1-3build4
1.51.1-4
1.51.1-4build1
1.51.1-4build2
1.51.1-4.1build3
1.51.1-4.1build4
1.51.1-4.1build5

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}