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Red Hat: RHSA-2021-4589 Moderate: Gcc Toolset 10 BiDi Attack Fix

red hat
Calendar Grey November 10, 2021
Dist Redhat Esm H88
The latest gcc-toolset-10-annobin update strengthens protections against BiDi Trojan vulnerabilities in Red Hat Enterprise Linux 8.4.
An update for gcc-toolset-10-annobin is now available for Red Hat Enterprise Linux 8.4 Extended Update Support

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 moderate Red Hat 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 EUS (v.8.4):
Source: gcc-toolset-10-annobin-9.29-1.el8_4.1.src.rpm
aarch64: gcc-toolset-10-annobin-9.29-1.el8_4.1.aarch64.rpm gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.aarch64.rpm gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.aarch64.rpm
ppc64le: gcc-toolset-10-annobin-9.29-1.el8_4.1.ppc64le.rpm gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.ppc64le.rpm gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.ppc64le.rpm
s390x: gcc-toolset-10-annobin-9.29-1.el8_4.1.s390x.rpm gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.s390x.rpm gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.s390x.rpm
x86_64: gcc-toolset-10-annobin-9.29-1.el8_4.1.x86_64.rpm gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.x86_64.rpm gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Advisory ID: RHSA-2021:4589-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4589
Issue date: 2021-11-10

Topic

An update for gcc-toolset-10-annobin is now available for Red HatEnterprise Linux 8.4 Extended Update Support.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 moderate Red Hat gcc-toolset BiDi attack

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v.8.4) - aarch64, 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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