Szczegóły CWE-176

CWE-176

Improper Handling of Unicode Encoding
Draft
2006-07-19
00h00 +00:00
2025-12-11
00h00 +00:00
CWE Mitre.org
Powiadomienia dla konkretnego CWE
Bądź na bieżąco z wszelkimi zmianami dotyczącymi konkretnego CWE.
Zarządzaj powiadomieniami

Nazwa: Improper Handling of Unicode Encoding

The product does not properly handle when an input contains Unicode encoding.

Informacje ogólne

Sposoby wprowadzenia

Implementation

Odpowiednie platformy

Język

Class: Not Language-Specific (Undetermined)

Technologie

Class: Not Technology-Specific (Undetermined)

Typowe konsekwencje

Zakres Wpływ Prawdopodobieństwo
IntegrityUnexpected State

Zaobserwowane przykłady

Odniesienia Opis

CVE-2000-0884

Server allows remote attackers to read documents outside of the web root, and possibly execute arbitrary commands, via malformed URLs that contain Unicode encoded characters.

CVE-2001-0709

Server allows a remote attacker to obtain source code of ASP files via a URL encoded with Unicode.

CVE-2001-0669

Overlaps interaction error.

Potencjalne środki zaradcze

Phases : Architecture and Design
Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.
Phases : Implementation
Phases : Implementation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

Uwagi dotyczące mapowania podatności

Uzasadnienie : This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Komentarz : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Powiązane wzorce ataków

CAPEC-ID Nazwa wzorca ataku
CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
An attacker may provide a Unicode string to a system component that is not Unicode aware and use that to circumvent the filter or cause the classifying mechanism to fail to properly understanding the request. That may allow the attacker to slip malicious data past the content filter and/or possibly cause the application to route the request incorrectly.

Odniesienia

REF-62

The Art of Software Security Assessment
Mark Dowd, John McDonald, Justin Schuh.

Zgłoszenie

Nazwa Organizacja Data Data wydania Version
PLOVER 2006-07-19 +00:00 2006-07-19 +00:00 Draft 3

Modyfikacje

Nazwa Organizacja Data Komentarz
Eric Dalci Cigital 2008-07-01 +00:00 updated Potential_Mitigations, Time_of_Introduction
CWE Content Team MITRE 2008-09-08 +00:00 updated Relationships, Taxonomy_Mappings
CWE Content Team MITRE 2008-11-24 +00:00 updated Relationships, Taxonomy_Mappings
CWE Content Team MITRE 2009-03-10 +00:00 updated Demonstrative_Examples
CWE Content Team MITRE 2009-05-27 +00:00 updated Demonstrative_Examples
CWE Content Team MITRE 2009-07-27 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2010-12-13 +00:00 updated Name
CWE Content Team MITRE 2011-03-29 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2011-06-01 +00:00 updated Common_Consequences
CWE Content Team MITRE 2011-06-27 +00:00 updated Common_Consequences
CWE Content Team MITRE 2011-09-13 +00:00 updated Relationships, Taxonomy_Mappings
CWE Content Team MITRE 2012-05-11 +00:00 updated Observed_Examples, References, Relationships
CWE Content Team MITRE 2012-10-30 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2014-07-30 +00:00 updated Relationships
CWE Content Team MITRE 2017-11-08 +00:00 updated Applicable_Platforms, Taxonomy_Mappings
CWE Content Team MITRE 2020-02-24 +00:00 updated Potential_Mitigations, Relationships
CWE Content Team MITRE 2020-06-25 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2023-01-31 +00:00 updated Description
CWE Content Team MITRE 2023-04-27 +00:00 updated Relationships
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes
CWE Content Team MITRE 2024-02-29 +00:00 updated Demonstrative_Examples
CWE Content Team MITRE 2025-12-11 +00:00 updated Applicable_Platforms, Weakness_Ordinalities
Informacje prezentowane na CVE Find pochodzą z kilku starannie wybranych źródeł referencyjnych. Dane CVE są dostarczane przez MITRE Corporation i Narodową Bazę Podatności (NVD). Katalog znanych eksploatowanych podatności (KEV) pochodzi z Agencji ds. Bezpieczeństwa Cyberprzestrzeni i Infrastruktury (CISA), natomiast wyniki EPSS pochodzą z FIRST.org. Ponadto dane dotyczące słabości oprogramowania (CWE) i typowych wzorców ataków (CAPEC) są utrzymywane przez MITRE Corporation, a informacje o konfiguracjach sprzętu i oprogramowania (CPE) są dostarczane przez NVD.