SEI CERT Oracle Coding Standard for Java

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Using path names from untrusted sources without first canonicalizing them and then validating them can result in directory traversal and path equivalence vulnerabilities.

Recommendation Rule

Severity

Likelihood

Remediation Cost

Priority

Level

IDS02-J

medium

unlikely

medium

P4

L3

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The CERT C Secure Coding Standard

FIO02-C. Canonicalize path names originating from untrusted sources

The CERT C++ Secure Coding Standard

FIO02-CPP. Canonicalize path names originating from untrusted sources

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="6cd585883cdce9be-ca744487-4c944981-8f7dbf8f-ed50bbfc9784a540d5bb5361"><ac:plain-text-body><![CDATA[

[ISO/IEC TR 24772:2010

http://www.aitcnet.org/isai/]

"Path Traversal [EWR]"

]]></ac:plain-text-body></ac:structured-macro>

MITRE CWE

CWE-171, "Cleansing, Canonicalization, and Comparison Errors"

 

CWE-647, "Use of Non-Canonical URL Paths for Authorization Decisions"

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[[API 2006

AA. Bibliography#API 06]]

[method getCanonicalPath()

http://java.sun.com/javase/6/docs/api/java/io/File.html#getCanonicalPath()]

]]></ac:plain-text-body></ac:structured-macro>

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="fb6693c24706bc41-cccce5f6-4c764190-a72db715-80d07ef191bb9d9dfe7078b0"><ac:plain-text-body><![CDATA[

[[Harold 1999

AA. Bibliography#Harold 99]]

 

]]></ac:plain-text-body></ac:structured-macro>

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