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Trojan Source

Trojan Source is a software vulnerability that abuses Unicode's bidirectional characters to display source code differently than the actual execution of the source code. The exploit utilizes how writing scripts of different reading directions are displayed and encoded on computers. It was discovered by Nicholas Boucher and Ross Anderson at Cambridge…

Impact and mitigation, Background & Methodology

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Impact and mitigation

JavaGoC++C#Python
14 related topics

Background

Left-to-rightRight-to-leftHebrewArabic
4 related topics

Methodology

Bidirectional charactersIDEs
2 related topics

Overview

Software vulnerabilityUnicodeSource codeCambridge University
4 related topics

Key facts & relationships

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Affected software
Unicode, source code
CVE identifiers
CVE-2021-42694
Date discovered
September 9, 2021; 4 years ago (2021-09-09)
Discoverer
Nicholas Boucher, Ross Anderson

Topics to explore

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Overview

Background

Methodology

Impact and mitigation

Advanced semantic analysis

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Map overview Semantic statistics

Trojan Source

Nodes29
Edges28
Triples24
Avg. degree1.93
Density0.068966
Components1

How this topic connects Entity context

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Trojan Source

Top relations

related to External links · 14
Trojan Source → BIDI, CVE, CVE Common Vulnerabilities, CVE-2021-42694, ExposuresCVE-2021-42574, National Vulnerability Database, Nicholas Boucher, NIST, Ross AndersonProof, Source, UAX, Unicode Consortium, UnicodeCERT/CC, UTR
CVE identifiers · 2
Trojan Source → CVE-.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-col…, CVE-2021-42694
Affected software · 1
Trojan Source → Unicode, source code
Date discovered · 1
Trojan Source → September 9, 2021; 4 years ago (2021-09-09)
Discoverer · 1
Trojan Source → Nicholas Boucher, Ross Anderson
Website · 1
Trojan Source → trojansource.codes
is a · 1
Trojan Source → software vulnerability that abuses Unicode's bidirectional characters to display source code differently than the actual execution of the source code

Important terminology Word statistics

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Important terminology

code characters exploit source unicode text bidi bidirectional different display displayed trojan nicholas boucher ross languages visually writing website software

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Trojan SourceAffected softwareUnicode, source code1.00infobox
Trojan SourceCVE identifiersCVE-.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-col…1.00infobox
Trojan SourceCVE identifiersCVE-2021-426941.00infobox
Trojan SourceDate discoveredSeptember 9, 2021; 4 years ago (2021-09-09)1.00infobox
Trojan SourceDiscovererNicholas Boucher, Ross Anderson1.00infobox
Trojan SourceWebsitetrojansource.codes1.00infobox
Trojan Sourceis asoftware vulnerability that abuses Unicode's bidirectional characters to display source code differently than the actual execution of the source code0.90text
Javainstance ofThis includes languages0.80text
Goinstance ofThis includes languages0.80text
Cinstance ofThis includes languages0.80text
Trojan Sourcerelated to External linksNicholas Boucher0.60section
Trojan Sourcerelated to External linksRoss AndersonProof0.60section

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    Min side: 3
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