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Red Hat: RHSA-2021-4591 Moderate: BiDi Trojan Source Flaw

red hat
Calendar Grey November 10, 2021
Dist Redhat Esm H88
An update for gcc-toolset-11-annobin is now released for Red Hat, addressing a moderate security issue related to BiDi Unicode character processing.
An update for gcc-toolset-11-annobin is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

Annobin provides a compiler plugin to annotate and tools to examine compiled binary files.
Security Fix(es):
* Developer environment: Unicode's bidirectional (BiDi) override characterscan cause trojan source attacks (CVE-2021-42574)
The following changes were introduced in annobin in order to facilitate detection of BiDi Unicode characters:
This update of annobin adds a new annocheck test to detect the presence of multibyte characters in symbol names.
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.

Topics%20covered

Topics Covered

security advisory Red Hat Moderate severity toolset update gcc-toolset BiDi attack

References

https://access.redhat.com/security/cve/CVE-2021-42574 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/security/vulnerabilities/RHSB-2021-007

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: gcc-toolset-11-annobin-9.85-1.el8_5.1.src.rpm
aarch64: gcc-toolset-11-annobin-annocheck-9.85-1.el8_5.1.aarch64.rpm gcc-toolset-11-annobin-annocheck-debuginfo-9.85-1.el8_5.1.aarch64.rpm gcc-toolset-11-annobin-debuginfo-9.85-1.el8_5.1.aarch64.rpm gcc-toolset-11-annobin-plugin-gcc-9.85-1.el8_5.1.aarch64.rpm gcc-toolset-11-annobin-plugin-gcc-debuginfo-9.85-1.el8_5.1.aarch64.rpm
noarch: gcc-toolset-11-annobin-docs-9.85-1.el8_5.1.noarch.rpm
ppc64le: gcc-toolset-11-annobin-annocheck-9.85-1.el8_5.1.ppc64le.rpm gcc-toolset-11-annobin-annocheck-debuginfo-9.85-1.el8_5.1.ppc64le.rpm gcc-toolset-11-annobin-debuginfo-9.85-1.el8_5.1.ppc64le.rpm gcc-toolset-11-annobin-plugin-gcc-9.85-1.el8_5.1.ppc64le.rpm gcc-toolset-11-annobin-plugin-gcc-debuginfo-9.85-1.el8_5.1.ppc64le.rpm
s390x: gcc-toolset-11-annobin-annocheck-9.85-1.el8_5.1.s390x.rpm gcc-toolset-11-annobin-annocheck-debuginfo-9.85-1.el8_5.1.s390x.rpm gcc-toolset-11-annobin-debuginfo-9.85-1.el8_5.1.s390x.rpm gcc-toolset-11-annobin-plugin-gcc-9.85-1.el8_5.1.s390x.rpm gcc-toolset-11-annobin-plugin-gcc-debuginfo-9.85-1.el8_5.1.s390x.rpm
x86_64: gcc-toolset-11-annobin-annocheck-9.85-1.el8_5.1.x86_64.rpm gcc-toolset-11-annobin-annocheck-debuginfo-9.85-1.el8_5.1.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:4591-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4591
Issue date: 2021-11-10

Topic

An update for gcc-toolset-11-annobin is now available for Red HatEnterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat Moderate severity toolset update gcc-toolset BiDi attack

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2005819 - CVE-2021-42574 Developer environment: Unicode's bidirectional (BiDi) override characters can cause trojan source attacks

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