Upstream information

CVE-2023-33953 at MITRE

Description

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…

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.5 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1214148 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Image SLES15-SP4-BYOS
Image SLES15-SP4-BYOS-Azure
Image SLES15-SP4-HPC-BYOS
Image SLES15-SP4-HPC-BYOS-Azure
Image SLES15-SP4-Hardened-BYOS
Image SLES15-SP4-Hardened-BYOS-Azure
Image SLES15-SP4-SAP
Image SLES15-SP4-SAP-Azure
Image SLES15-SP4-SAP-BYOS
Image SLES15-SP4-SAP-BYOS-Azure
Image SLES15-SP4-SAP-Hardened
Image SLES15-SP4-SAP-Hardened-Azure
Image SLES15-SP4-SAP-Hardened-BYOS
Image SLES15-SP4-SAP-Hardened-BYOS-Azure
Image SLES15-SP4-SAPCAL
Image SLES15-SP4-SAPCAL-Azure
  • python311-grpcio >= 1.60.0-150400.9.3.2
SUSE Linux Enterprise Desktop 15 SP5
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
  • python311-grpcio >= 1.60.0-150400.9.3.2
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP5-2024-573
SUSE-SLE-Module-Python3-15-SP5-2024-573
SUSE Linux Enterprise Desktop 15 SP6
SUSE Linux Enterprise High Performance Computing 15 SP6
SUSE Linux Enterprise Module for Basesystem 15 SP6
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • grpc-devel >= 1.60.0-150600.13.6
  • libgrpc++1_60 >= 1.60.0-150600.13.6
  • libgrpc1_60 >= 1.60.0-150600.13.6
  • libgrpc37 >= 1.60.0-150600.13.6
  • libupb37 >= 1.60.0-150600.13.6
 Patchnames:
SUSE Linux Enterprise Module for Basesystem 15 SP6 GA grpc-devel-1.60.0-150600.13.6
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2024-573
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2024-573
SUSE Linux Enterprise High Performance Computing 15 SP5
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
  • python311-grpcio >= 1.60.0-150400.9.3.2
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP5-2024-573
SUSE-SLE-Module-Public-Cloud-15-SP5-2024-573
SUSE-SLE-Module-Python3-15-SP5-2024-573
SUSE Linux Enterprise Module for Basesystem 15 SP5
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP5-2024-573
SUSE Linux Enterprise Module for Public Cloud 15 SP5
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Module-Public-Cloud-15-SP5-2024-573
SUSE Linux Enterprise Module for Python 3 15 SP5
  • python311-grpcio >= 1.60.0-150400.9.3.2
 Patchnames:
SUSE-SLE-Module-Python3-15-SP5-2024-573
SUSE Linux Enterprise Server 15 SP4-LTSS
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2024-573
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2024-573
SUSE Manager Proxy 4.3
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-2024-573
SUSE Manager Retail Branch Server 4.3
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-2024-573
SUSE Manager Server 4.3
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.3-2024-573
openSUSE Leap 15.5
  • grpc-devel >= 1.60.0-150400.8.3.2
  • grpc-source >= 1.60.0-150400.8.3.2
  • libgrpc++1_60 >= 1.60.0-150400.8.3.2
  • libgrpc1_60 >= 1.60.0-150400.8.3.2
  • libgrpc37 >= 1.60.0-150400.8.3.2
  • python311-grpcio >= 1.60.0-150400.9.3.2
 Patchnames:
openSUSE-SLE-15.5-2024-573

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP5 grpc Released
SUSE Linux Enterprise Desktop 15 SP5 python-grpcio Released
SUSE Linux Enterprise Desktop 15 SP6 grpc Released
SUSE Linux Enterprise High Performance Computing 15 SP5 grpc Released
SUSE Linux Enterprise High Performance Computing 15 SP5 python-grpcio Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python-grpcio Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python-grpcio Released
SUSE Linux Enterprise High Performance Computing 15 SP6 grpc Released
SUSE Linux Enterprise High Performance Computing 15 SP6 python-grpcio Released
SUSE Linux Enterprise Module for Basesystem 15 SP5 grpc Released
SUSE Linux Enterprise Module for Basesystem 15 SP6 grpc Released
SUSE Linux Enterprise Module for Public Cloud 15 SP5 grpc Released
SUSE Linux Enterprise Module for Public Cloud 15 SP5 python-grpcio Released
SUSE Linux Enterprise Module for Public Cloud 15 SP6 grpc Released
SUSE Linux Enterprise Module for Public Cloud 15 SP6 python-grpcio Released
SUSE Linux Enterprise Module for Python 3 15 SP5 python-grpcio Released
SUSE Linux Enterprise Server 15 SP5 grpc Released
SUSE Linux Enterprise Server 15 SP5 python-grpcio Released
SUSE Linux Enterprise Server 15 SP5-LTSS grpc Affected
SUSE Linux Enterprise Server 15 SP5-LTSS python-grpcio Released
SUSE Linux Enterprise Server 15 SP6 grpc Released
SUSE Linux Enterprise Server 15 SP6 python-grpcio Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 grpc Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 python-grpcio Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 grpc Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 python-grpcio Released
SUSE Manager Proxy 4.3 grpc Released
SUSE Manager Proxy 4.3 python-grpcio Released
SUSE Manager Retail Branch Server 4.3 grpc Released
SUSE Manager Retail Branch Server 4.3 python-grpcio Released
SUSE Manager Server 4.3 grpc Released
SUSE Manager Server 4.3 python-grpcio Released
openSUSE Leap 15.5 grpc Released
openSUSE Leap 15.5 python-grpcio Released
openSUSE Leap 15.6 grpc Released
openSUSE Leap 15.6 python-grpcio Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Desktop 15 SP4 grpc Affected
SUSE Linux Enterprise Desktop 15 SP4 LTSS grpc Released
SUSE Linux Enterprise High Performance Computing 15 SP2 grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 python-grpcio Released
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS grpc Released
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS grpc Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 grpc Affected
SUSE Linux Enterprise Module for Public Cloud 15 SP4 grpc Released
SUSE Linux Enterprise Module for Public Cloud 15 SP4 python-grpcio Released
SUSE Linux Enterprise Module for Server Applications 15 SP3 grpc Affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 grpc Affected
SUSE Linux Enterprise Server 15 SP2 grpc Affected
SUSE Linux Enterprise Server 15 SP3 grpc Affected
SUSE Linux Enterprise Server 15 SP3-LTSS grpc Affected
SUSE Linux Enterprise Server 15 SP4 grpc Affected
SUSE Linux Enterprise Server 15 SP4 python-grpcio Released
SUSE Linux Enterprise Server 15 SP4-LTSS grpc Released
SUSE Linux Enterprise Server for SAP Applications 15 SP2 grpc Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 grpc Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 grpc Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 python-grpcio Released
Products past their end of life and not receiving proactive updates anymore.
SUSE Enterprise Storage 6 grpc Affected
SUSE Enterprise Storage 7 grpc Affected
SUSE Enterprise Storage 7.1 grpc Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 grpc Affected
SUSE Linux Enterprise Module for Public Cloud 15 SP1 grpc Affected
SUSE Linux Enterprise Module for Public Cloud 15 SP2 grpc Affected
SUSE Linux Enterprise Module for Public Cloud 15 SP3 grpc Affected
SUSE Linux Enterprise Real Time 15 SP3 grpc Affected
SUSE Linux Enterprise Real Time 15 SP4 grpc Affected
SUSE Linux Enterprise Server 15 SP1 grpc Affected
SUSE Linux Enterprise Server 15 SP3-BCL grpc Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 grpc Affected
SUSE Manager Proxy 4.0 grpc Affected
SUSE Manager Proxy 4.1 grpc Affected
SUSE Manager Proxy 4.2 grpc Affected
SUSE Manager Retail Branch Server 4.0 grpc Affected
SUSE Manager Retail Branch Server 4.1 grpc Affected
SUSE Manager Retail Branch Server 4.2 grpc Affected
SUSE Manager Server 4.0 grpc Affected
SUSE Manager Server 4.1 grpc Affected
SUSE Manager Server 4.2 grpc Affected
openSUSE Leap 15.3 grpc Affected
openSUSE Leap 15.4 grpc Released
openSUSE Leap 15.4 python-grpcio Released

SUSE Timeline for this CVE

CVE page created: Wed Aug 9 16:03:04 2023
CVE page last modified: Sat Dec 21 00:16:28 2024