Upstream information

CVE-2021-42574 at MITRE

Description

** DISPUTED ** An issue was discovered in the Bidirectional Algorithm in the Unicode Specification through 14.0. It permits the visual reordering of characters via control sequences, which can be used to craft source code that renders different logic than the logical ordering of tokens ingested by compilers and interpreters. Adversaries can leverage this to encode source code for compilers accepting Unicode such that targeted vulnerabilities are introduced invisibly to human reviewers. NOTE: the Unicode Consortium offers the following alternative approach to presenting this concern. An issue is noted in the nature of international text that can affect applications that implement support for The Unicode Standard and the Unicode Bidirectional Algorithm (all versions). Due to text display behavior when text includes left-to-right and right-to-left characters, the visual order of tokens may be different from their logical order. Additionally, control characters needed to fully support the requirements of bidirectional text can further obfuscate the logical order of tokens. Unless mitigated, an adversary could craft source code such that the ordering of tokens perceived by human reviewers does not match what will be processed by a compiler/interpreter/etc. The Unicode Consortium has documented this class of vulnerability in its document, Unicode Technical Report #36, Unicode Security Considerations. The Unicode Consortium also provides guidance on mitigations for this class of issues in Unicode Technical Standard #39, Unicode Security Mechanisms, and in Unicode Standard Annex #31, Unicode Identifier and Pattern Syntax. Also, the BIDI specification allows applications to tailor the implementation in ways that can mitigate misleading visual reordering in program text; see HL4 in Unicode Standard Annex #9, Unicode Bidirectional Algorithm.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5.1
Vector AV:N/AC:H/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 8.3 8.3
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction Required Required
Scope Changed Changed
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1

Note from the SUSE Security Team

This vulnerability affects viewers or editors of source code which 'hide' problematic code without notification. This mostly are web frontends to github or gitlab or similar, which have been fixed.

SUSE Bugzilla entry: 1191820 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • cargo1.56 >= 1.56.1-1.1
  • rust1.56 >= 1.56.1-1.1
Patchnames:
openSUSE Tumbleweed GA cargo1.56-1.56.1-1.1


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.
SLES15-SP3-CHOST-BYOS-Aliyun vim Ignore
SLES15-SP3-CHOST-BYOS-Azure vim Ignore
SLES15-SP3-CHOST-BYOS-EC2 vim Ignore
SLES15-SP3-CHOST-BYOS-GCE vim Ignore
SLES15-SP4-CHOST-BYOS vim Ignore
SLES15-SP4-CHOST-BYOS-Aliyun vim Ignore
SLES15-SP4-CHOST-BYOS-Azure vim Ignore
SLES15-SP4-CHOST-BYOS-EC2 vim Ignore
SLES15-SP4-CHOST-BYOS-GCE vim Ignore
SUSE Enterprise Storage 7 emacs Ignore
SUSE Enterprise Storage 7 vim Ignore
SUSE Enterprise Storage 7.1 emacs Ignore
SUSE Enterprise Storage 7.1 vim Ignore
SUSE Linux Enterprise Desktop 15 SP4 emacs Ignore
SUSE Linux Enterprise Desktop 15 SP4 vim Ignore
SUSE Linux Enterprise High Performance Computing 12 SP5 emacs Ignore
SUSE Linux Enterprise High Performance Computing 12 SP5 vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP4 emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP4 vim Ignore
SUSE Linux Enterprise Micro 5.1 vim Ignore
SUSE Linux Enterprise Micro 5.2 vim Ignore
SUSE Linux Enterprise Micro 5.3 vim Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP4 emacs Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP4 vim Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP4 emacs Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP4 vim Ignore
SUSE Linux Enterprise Real Time 15 SP3 emacs Ignore
SUSE Linux Enterprise Real Time 15 SP3 vim Ignore
SUSE Linux Enterprise Server 12 SP5 emacs Ignore
SUSE Linux Enterprise Server 12 SP5 vim Ignore
SUSE Linux Enterprise Server 12-LTSS emacs Ignore
SUSE Linux Enterprise Server 12-LTSS vim Ignore
SUSE Linux Enterprise Server 15 SP4 emacs Ignore
SUSE Linux Enterprise Server 15 SP4 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP5 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP5 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP4 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP4 vim Ignore
SUSE Manager Proxy 4.2 emacs Ignore
SUSE Manager Proxy 4.2 vim Ignore
SUSE Manager Proxy 4.3 emacs Ignore
SUSE Manager Proxy 4.3 vim Ignore
SUSE Manager Retail Branch Server 4.2 emacs Ignore
SUSE Manager Retail Branch Server 4.2 vim Ignore
SUSE Manager Retail Branch Server 4.3 emacs Ignore
SUSE Manager Retail Branch Server 4.3 vim Ignore
SUSE Manager Server 4.2 emacs Ignore
SUSE Manager Server 4.2 vim Ignore
SUSE Manager Server 4.3 emacs Ignore
SUSE Manager Server 4.3 vim Ignore
Products under Long Term Service Pack support and receiving important and critical security fixes.
SLES15-EC2-CHOST-HVM-BYOS vim Ignore
SLES15-SP1-CHOST-BYOS-Azure vim Ignore
SLES15-SP1-CHOST-BYOS-EC2 vim Ignore
SLES15-SP1-CHOST-BYOS-GCE vim Ignore
SLES15-SP2-CHOST-BYOS-Aliyun vim Ignore
SLES15-SP2-CHOST-BYOS-Azure vim Ignore
SLES15-SP2-CHOST-BYOS-EC2 vim Ignore
SLES15-SP2-CHOST-BYOS-GCE vim Ignore
SUSE Linux Enterprise High Performance Computing 15 emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP1 emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP1 vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP2 emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP2 vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP3 emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP3 vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS vim Ignore
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS vim Ignore
SUSE Linux Enterprise High Performance Computing 15-ESPOS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15-ESPOS vim Ignore
SUSE Linux Enterprise High Performance Computing 15-LTSS emacs Ignore
SUSE Linux Enterprise High Performance Computing 15-LTSS vim Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP1 emacs Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP1 vim Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP2 emacs Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP2 vim Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP3 emacs Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP3 vim Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP1 emacs Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP1 vim Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP2 emacs Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP2 vim Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP3 emacs Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 SP3 vim Ignore
SUSE Linux Enterprise Server 12 SP2-BCL emacs Ignore
SUSE Linux Enterprise Server 12 SP2-BCL vim Ignore
SUSE Linux Enterprise Server 12 SP4 emacs Ignore
SUSE Linux Enterprise Server 12 SP4 vim Ignore
SUSE Linux Enterprise Server 12 SP4-LTSS emacs Ignore
SUSE Linux Enterprise Server 12 SP4-LTSS vim Ignore
SUSE Linux Enterprise Server 15 SP1 emacs Ignore
SUSE Linux Enterprise Server 15 SP1 vim Ignore
SUSE Linux Enterprise Server 15 SP1-LTSS emacs Ignore
SUSE Linux Enterprise Server 15 SP1-LTSS vim Ignore
SUSE Linux Enterprise Server 15 SP2 emacs Ignore
SUSE Linux Enterprise Server 15 SP2 vim Ignore
SUSE Linux Enterprise Server 15 SP2-LTSS emacs Ignore
SUSE Linux Enterprise Server 15 SP2-LTSS vim Ignore
SUSE Linux Enterprise Server 15 SP3 emacs Ignore
SUSE Linux Enterprise Server 15 SP3 vim Ignore
SUSE Linux Enterprise Server 15 SP3-LTSS emacs Ignore
SUSE Linux Enterprise Server 15 SP3-LTSS vim Ignore
SUSE Linux Enterprise Server 15-ESPOS emacs Ignore
SUSE Linux Enterprise Server 15-ESPOS vim Ignore
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 emacs Ignore
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 vim Ignore
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 emacs Ignore
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP4 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP4 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 15 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 15 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP1 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP1 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP2 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP2 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP3 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 15 SP3 vim Ignore
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 emacs Ignore
HPE Helion OpenStack 8 vim Ignore
SUSE CaaS Platform 3.0 vim Ignore
SUSE CaaS Platform 4.0 emacs Ignore
SUSE CaaS Platform 4.0 vim Ignore
SUSE Enterprise Storage 6 emacs Ignore
SUSE Enterprise Storage 6 vim Ignore
SUSE Linux Enterprise Desktop 11 SP4 emacs Ignore
SUSE Linux Enterprise Desktop 12 emacs Ignore
SUSE Linux Enterprise Desktop 12 vim Ignore
SUSE Linux Enterprise Desktop 12 SP1 emacs Ignore
SUSE Linux Enterprise Desktop 12 SP1 vim Ignore
SUSE Linux Enterprise Desktop 12 SP2 emacs Ignore
SUSE Linux Enterprise Desktop 12 SP2 vim Ignore
SUSE Linux Enterprise Desktop 12 SP3 emacs Ignore
SUSE Linux Enterprise Desktop 12 SP3 vim Ignore
SUSE Linux Enterprise Desktop 12 SP4 emacs Ignore
SUSE Linux Enterprise Desktop 12 SP4 vim Ignore
SUSE Linux Enterprise Desktop 15 emacs Ignore
SUSE Linux Enterprise Desktop 15 vim Ignore
SUSE Linux Enterprise Desktop 15 SP1 emacs Ignore
SUSE Linux Enterprise Desktop 15 SP1 vim Ignore
SUSE Linux Enterprise Desktop 15 SP2 emacs Ignore
SUSE Linux Enterprise Desktop 15 SP2 vim Ignore
SUSE Linux Enterprise Desktop 15 SP3 emacs Ignore
SUSE Linux Enterprise Desktop 15 SP3 vim Ignore
SUSE Linux Enterprise Micro 5.0 vim Ignore
SUSE Linux Enterprise Module for Basesystem 15 emacs Ignore
SUSE Linux Enterprise Module for Basesystem 15 vim Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 emacs Ignore
SUSE Linux Enterprise Module for Desktop Applications 15 vim Ignore
SUSE Linux Enterprise Real Time 15 SP2 emacs Ignore
SUSE Linux Enterprise Real Time 15 SP2 vim Ignore
SUSE Linux Enterprise Server 11 SP3 emacs Ignore
SUSE Linux Enterprise Server 11 SP3 vim Ignore
SUSE Linux Enterprise Server 11 SP3-LTSS emacs Ignore
SUSE Linux Enterprise Server 11 SP3-LTSS vim Ignore
SUSE Linux Enterprise Server 11 SP4 emacs Ignore
SUSE Linux Enterprise Server 11 SP4 vim Ignore
SUSE Linux Enterprise Server 11 SP4-LTSS emacs Ignore
SUSE Linux Enterprise Server 11 SP4-LTSS vim Ignore
SUSE Linux Enterprise Server 12 emacs Ignore
SUSE Linux Enterprise Server 12 vim Ignore
SUSE Linux Enterprise Server 12 SP1 emacs Ignore
SUSE Linux Enterprise Server 12 SP1 vim Ignore
SUSE Linux Enterprise Server 12 SP1-LTSS emacs Ignore
SUSE Linux Enterprise Server 12 SP1-LTSS vim Ignore
SUSE Linux Enterprise Server 12 SP2 emacs Ignore
SUSE Linux Enterprise Server 12 SP2 vim Ignore
SUSE Linux Enterprise Server 12 SP2-ESPOS emacs Ignore
SUSE Linux Enterprise Server 12 SP2-ESPOS vim Ignore
SUSE Linux Enterprise Server 12 SP2-LTSS emacs Ignore
SUSE Linux Enterprise Server 12 SP2-LTSS vim Ignore
SUSE Linux Enterprise Server 12 SP3 emacs Ignore
SUSE Linux Enterprise Server 12 SP3 vim Ignore
SUSE Linux Enterprise Server 12 SP3-BCL emacs Ignore
SUSE Linux Enterprise Server 12 SP3-BCL vim Ignore
SUSE Linux Enterprise Server 12 SP3-ESPOS emacs Ignore
SUSE Linux Enterprise Server 12 SP3-ESPOS vim Ignore
SUSE Linux Enterprise Server 12 SP3-LTSS emacs Ignore
SUSE Linux Enterprise Server 12 SP3-LTSS vim Ignore
SUSE Linux Enterprise Server 12 SP4-ESPOS emacs Ignore
SUSE Linux Enterprise Server 12 SP4-ESPOS vim Ignore
SUSE Linux Enterprise Server 15 emacs Ignore
SUSE Linux Enterprise Server 15 vim Ignore
SUSE Linux Enterprise Server 15 SP1-BCL emacs Ignore
SUSE Linux Enterprise Server 15 SP1-BCL vim Ignore
SUSE Linux Enterprise Server 15 SP2-BCL emacs Ignore
SUSE Linux Enterprise Server 15 SP2-BCL vim Ignore
SUSE Linux Enterprise Server 15 SP3-BCL emacs Ignore
SUSE Linux Enterprise Server 15 SP3-BCL vim Ignore
SUSE Linux Enterprise Server 15-LTSS emacs Ignore
SUSE Linux Enterprise Server 15-LTSS vim Ignore
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 emacs Ignore
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 11 SP4 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP1 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP1 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP2 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP2 vim Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP3 emacs Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP3 vim Ignore
SUSE Linux Enterprise Software Development Kit 11 SP4 emacs Ignore
SUSE Manager Proxy 4.0 emacs Ignore
SUSE Manager Proxy 4.0 vim Ignore
SUSE Manager Proxy 4.1 emacs Ignore
SUSE Manager Proxy 4.1 vim Ignore
SUSE Manager Retail Branch Server 4.0 emacs Ignore
SUSE Manager Retail Branch Server 4.0 vim Ignore
SUSE Manager Retail Branch Server 4.1 emacs Ignore
SUSE Manager Retail Branch Server 4.1 vim Ignore
SUSE Manager Server 4.0 emacs Ignore
SUSE Manager Server 4.0 vim Ignore
SUSE Manager Server 4.1 emacs Ignore
SUSE Manager Server 4.1 vim Ignore
SUSE OpenStack Cloud 7 emacs Ignore
SUSE OpenStack Cloud 7 vim Ignore
SUSE OpenStack Cloud 8 emacs Ignore
SUSE OpenStack Cloud 8 vim Ignore
SUSE OpenStack Cloud 9 emacs Ignore
SUSE OpenStack Cloud 9 vim Ignore
SUSE OpenStack Cloud Crowbar 8 emacs Ignore
SUSE OpenStack Cloud Crowbar 8 vim Ignore
SUSE OpenStack Cloud Crowbar 9 emacs Ignore
SUSE OpenStack Cloud Crowbar 9 vim Ignore
Container Status
bci/dotnet-aspnet:5.0
bci/dotnet-runtime:5.0
bci/dotnet-sdk:5.0
ses/7.1/ceph/haproxy
suse/sle-micro/5.0/toolbox
suse/sle-micro/5.1/toolbox
suse/sle-micro/5.2/toolbox
suse/sle-micro/5.3/toolbox
suse/sle-micro/5.4/toolbox
suse/sles/15.2/virt-launcher:0.38.1
suse/sles/15.3/virt-launcher:0.45.0
suse/sles/15.4/virt-launcher:0.49.0
vimIgnore


SUSE Timeline for this CVE

CVE page created: Tue Oct 19 12:15:29 2021
CVE page last modified: Fri Jan 20 16:10:33 2023