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.
| CVE Infomation | Exploits or more Infomation |
|---|---|
| mitre | EXPLOIT DATABASE |
| NVD | 0day.today |
| vulmon.com | github |
| CVE Details | |
| JVN ENG JPN | |
| Reconshell |
Software Tag:
List of frequently cited URLs
| User | URL | Info Source | Date |
|---|---|---|---|
| kzalloc1 | https://github.com/tin-z/solidity_CVE-2021-42574-POC | Source kzalloc1 1620486397760266240 | 2023/02/01 |
| Prohacktiv3 | https://github.com/tin-z/solidity_CVE-2021-42574-POC | Source Prohacktiv3 1620682896121163777 | 2023/02/01 |
| Prohacktiv3 | https://twitter.com/Prohacktiv3/status/1620682896121163777/... | Source Prohacktiv3 1620682896121163777 | 2023/02/01 |
List of frequently cited URLs
| URL | Num of Times Referred to |
|---|---|
| confluence.atlassian.com | 7 |
| Hat.Red | 4 |
| github.blog | 4 |
| twitter.com | 4 |
| trojansource.codes | 4 |
| scanmycode.today | 3 |
| www.shiomiya.com | 3 |
| groups.google.com | 3 |
| blog.rust-lang.org | 3 |
| User | URL | Info Source |
|---|---|---|
| kzalloc1 | github.com | Show Tweet |
| Prohacktiv3 | github.com | Show Tweet |
| Prohacktiv3 | twitter.com | Show Tweet |
| Name | URL |
|---|---|
| js-on/CVE-2021-42574 | https://github.com/js-on/CVE-2021-42574 |
| maweil/bidi_char_detector | https://github.com/maweil/bidi_char_detector |
| hffaust/CVE-2021-42574_and_CVE-2021-42694 | https://github.com/hffaust/CVE-2021-42574_and_CVE-2021-42694 |
| shiomiyan/CVE-2021-42574 | https://github.com/shiomiyan/CVE-2021-42574 |
| pierDipi/unicode-control-characters-action | https://github.com/pierDipi/unicode-control-characters-action |
| Name | URL |
|---|---|
| js-on/CVE-2021-42574 | github.com |
| maweil/bidi_char_detector | github.com |
| hffaust/CVE-2021-42574_and_CVE-2021-42694 | github.com |
| shiomiyan/CVE-2021-42574 | github.com |
| pierDipi/unicode-control-characters-action | github.com |