Security restrictions bypass in Rust Unicode implementation
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-42694 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Rust Programming Language Universal components / Libraries / Programming Languages & Components |
| Vendor | Rust Team |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU57849
Risk: Low
CVSSv3.1: 2.2 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-42694
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows an attacker to bypass certain security checks.
The vulnerability exists in the character definitions of the Unicode Specification. The specification allows an attacker to produce source code identifiers such as function names using homoglyphs that render visually identical to a target identifier. Adversaries can leverage this to inject code via adversarial identifier definitions in upstream software dependencies invoked deceptively in downstream software.
MitigationInstall update from vendor's website.
Vulnerable software versionsRust Programming Language: 0.11.0 - 1.52.1
External linkshttp://blog.rust-lang.org/2021/11/01/cve-2021-42574.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
