● Covered by 1 source · 1 reportLow impact1 neutral
Unicode Consortium Publishes UTS #39 on Security Mechanisms for Unicode Usage
Key points
- UTS #39 specifies mechanisms for detecting Unicode security issues.
- Incorrect Unicode usage can lead to security vulnerabilities.
- The document is approved by the Unicode Consortium as a stable reference.
- It builds on guidelines from Unicode Technical Report #36.
New Unicode Technical Standard Released
The Unicode Consortium has published Unicode Technical Standard #39 (UTS #39), which outlines mechanisms for identifying potential security problems when using Unicode. This standard addresses the complexities introduced by Unicode's extensive character set and diverse writing systems, which can create vulnerabilities if not handled correctly.
Purpose and Background
UTS #39 serves as a stable reference document, approved by the Unicode Consortium after review by members and interested parties. It is intended to be cited as a normative reference by other specifications. The document specifies mechanisms that can be used to detect security issues, building upon the guidelines provided in Unicode Technical Report #36, "Unicode Security Considerations" [UTR36].
Conformance Requirements
Implementations claiming conformance to UTS #39 must adhere to specific clauses. For the General Profile for Identifiers, implementations must conform to either UTS-39-C1-1 (following Section 3.1 without change) or UTS-39-C1-2 (providing a precise list of character additions/removals while otherwise conforming to Section 3.1). Similar conformance clauses, UTS-39-C1.1-1 and UTS-39-C1.1-2, are specified for IDN Security Profiles for Identifiers.
Importance for Developers
This technical standard is important for developers and system architects who work with Unicode. By providing concrete mechanisms, UTS #39 helps ensure that software and systems can correctly identify and mitigate security risks associated with character handling, such as those that might arise from homoglyphs or mixed scripts in identifiers.
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Reporting from
The Unicode Consortium released Unicode Technical Standard #39 (UTS #39), detailing mechanisms to detect security problems arising from incorrect Unicode usage. This document provides a stable reference for developers to implement secure handling of Unicode characters, building on previous guidelines.