SB2021110209 - Red Hat Enterprise Linux AUS 7.3 update for binutils 

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Main Vulnerability Database SB2021110209

SB2021110209 - Red Hat Enterprise Linux AUS 7.3 update for binutils

Published: November 2, 2021 Updated: September 18, 2023

Security Bulletin ID SB2021110209
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Input validation error (CVE-ID: CVE-2021-42574)

The vulnerability allows an attacker to bypass certain security checks.

The vulnerability exists in the Bidirectional Algorithm in the Unicode Specification. 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.

An attacker can leverage this behavior to encode source code for compilers accepting Unicode such that targeted vulnerabilities are introduced invisibly to human reviewers.


Remediation

Install update from vendor's website.

References