Vulnerability CVE-2021-42694


Published: 2021-11-01

Description:
An issue was discovered in the character definitions of the Unicode Specification through 14.0. The specification allows an adversary 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.

Type:

CWE-94

(Improper Control of Generation of Code ('Code Injection'))

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Unicode -> Unicode 

 References:
https://trojansource.codes
http://www.unicode.org/versions/Unicode14.0.0/
http://www.openwall.com/lists/oss-security/2021/11/01/1
http://www.openwall.com/lists/oss-security/2021/11/01/6
https://www.kb.cert.org/vuls/id/999008

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