RLSA-2021:4586
- Source
- https://errata.rockylinux.org/RLSA-2021:4586
- Import Source
- https://storage.googleapis.com/resf-osv-data/RLSA-2021:4586.json
- JSON Data
- https://api.osv.dev/v1/vulns/RLSA-2021:4586
- Related
- Published
- 2021-11-10T08:32:49Z
- Modified
- 2023-02-02T14:12:10.714514Z
- Severity
-
- 8.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- Moderate: gcc-toolset-11-gcc security update
- Details
-
The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as related support libraries.
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 gcc in order to facilitate detection of BiDi Unicode characters:
This update implements a new warning option -Wbidirectional to warn about possibly dangerous bidirectional characters.
There are three levels of warning supported by gcc: "-Wbidirectional=unpaired", which warns about improperly terminated BiDi contexts. (This is the default.) "-Wbidirectional=none", which turns the warning off. "-Wbidirectional=any", which warns about any use of bidirectional characters.
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.
- References
- Credits
-
-
- Rocky Enterprise Software Foundation
-
- Red Hat
-
Affected packages
Rocky Linux:8 / gcc-toolset-11-gcc
Package
- Name
- gcc-toolset-11-gcc
- Purl
- pkg:rpm/rocky-linux/gcc-toolset-11-gcc?distro=rocky-linux-8-5-legacy&epoch=0