Detections
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RHEL 8 : llvm-toolset:rhel8 (RHSA-2021:4743)
high Nessus Plugin ID 155613
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Synopsis
The remote Red Hat host is missing a security update for llvm-toolset:rhel8.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:4743 advisory.LLVM Toolset provides the LLVM compiler infrastructure framework, the Clang compiler for the C and C++ languages, the LLDB debugger, and related tools for code analysis.
Security Fix(es):
* Developer environment: Unicode's bidirectional (BiDi) override characters can cause trojan source attacks (CVE-2021-42574)
The following changes were introduced in clang in order to facilitate detection of BiDi Unicode characters:
clang-tidy now finds identifiers that contain Unicode characters with right-to-left direction, which can be confusing as they may change the understanding of a whole statement.
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL llvm-toolset:rhel8 package based on the guidance in RHSA-2021:4743.See Also
http://www.nessus.org/u?9b5b55ba
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/security/vulnerabilities/RHSB-2021-007
Plugin Details
Severity: High
ID: 155613
File Name: redhat-RHSA-2021-4743.nasl
Version: 1.9
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/19/2021
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.3
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 5.1
Temporal Score: 4
Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2021-42574
CVSS v3
Risk Factor: High
Base Score: 8.3
Temporal Score: 7.5
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:clang-tools-extra, p-cpe:/a:redhat:enterprise_linux:libomp, p-cpe:/a:redhat:enterprise_linux:clang-libs, p-cpe:/a:redhat:enterprise_linux:lldb, p-cpe:/a:redhat:enterprise_linux:llvm-static, p-cpe:/a:redhat:enterprise_linux:lld-devel, p-cpe:/a:redhat:enterprise_linux:llvm-toolset, p-cpe:/a:redhat:enterprise_linux:clang, p-cpe:/a:redhat:enterprise_linux:clang-analyzer, p-cpe:/a:redhat:enterprise_linux:compiler-rt, p-cpe:/a:redhat:enterprise_linux:python3-clang, p-cpe:/a:redhat:enterprise_linux:lld-test, p-cpe:/a:redhat:enterprise_linux:python3-lldb, p-cpe:/a:redhat:enterprise_linux:lld-libs, p-cpe:/a:redhat:enterprise_linux:python-lit, p-cpe:/a:redhat:enterprise_linux:lld, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:llvm-libs, p-cpe:/a:redhat:enterprise_linux:lldb-devel, p-cpe:/a:redhat:enterprise_linux:python3-lit, p-cpe:/a:redhat:enterprise_linux:llvm-test, p-cpe:/a:redhat:enterprise_linux:llvm, p-cpe:/a:redhat:enterprise_linux:llvm-googletest, p-cpe:/a:redhat:enterprise_linux:clang-devel, p-cpe:/a:redhat:enterprise_linux:llvm-devel, p-cpe:/a:redhat:enterprise_linux:libomp-devel, p-cpe:/a:redhat:enterprise_linux:llvm-doc, p-cpe:/a:redhat:enterprise_linux:clang-resource-filesystem, p-cpe:/a:redhat:enterprise_linux:libomp-test, p-cpe:/a:redhat:enterprise_linux:git-clang-format
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/18/2021
Vulnerability Publication Date: 11/1/2021
Reference Information
CVE: CVE-2021-42574