CVE-2021-42574
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- CVE-2021-42574
CVE Details
| Release Date: | 2021-11-01 | |
| Impact: | None | What is this? |
Description
An issue was discovered in the Bidirectional Algorithm in the Unicode Specification through 14.0. 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. Adversaries can leverage this to encode source code for compilers accepting Unicode such that targeted vulnerabilities are introduced invisibly to human reviewers.
See more information about CVE-2021-42574 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 8.3 |
| Vector String: | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Network |
| Attack Complexity: | High |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Changed |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (binutils) | ELSA-2021-4033 | 2021-11-02 |
| Oracle Linux version 8 (annobin) | ELSA-2021-4593 | 2021-11-18 |
| Oracle Linux version 8 (binutils) | ELSA-2021-4595 | 2021-11-18 |
| Oracle Linux version 8 (clang) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (compiler-rt) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (gcc) | ELSA-2021-4587 | 2021-11-18 |
| Oracle Linux version 8 (gcc-toolset-10-annobin) | ELSA-2021-4592 | 2021-11-18 |
| Oracle Linux version 8 (gcc-toolset-10-binutils) | ELSA-2021-4649 | 2021-11-18 |
| Oracle Linux version 8 (gcc-toolset-10-gcc) | ELSA-2021-4585 | 2021-11-19 |
| Oracle Linux version 8 (gcc-toolset-11-annobin) | ELSA-2021-4591 | 2021-11-18 |
| Oracle Linux version 8 (gcc-toolset-11-binutils) | ELSA-2021-4594 | 2021-11-18 |
| Oracle Linux version 8 (gcc-toolset-11-gcc) | ELSA-2021-4586 | 2021-11-18 |
| Oracle Linux version 8 (libomp) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (lld) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (lldb) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (llvm) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (llvm-toolset) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (python-lit) | ELSA-2021-4743 | 2021-11-19 |
| Oracle Linux version 8 (rust) | ELSA-2021-4590 | 2021-11-18 |
| Oracle Linux version 8 (rust-toolset) | ELSA-2021-4590 | 2021-11-18 |
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