SEI CERT Oracle Coding Standard for Java

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If validuser is actually a valid user name, this SELECT statement will select the validuser record in the table. The reason the hashed password is never checked is because username='validuser' is true; consequently the items after the OR are not tested. As long as the components after the OR generate a syntactically correct SQL expression, the attacker is granted the access of validuser.

Passwords should be hashed. Unfortunately, many small systems fail to comply; consequently, the password text added in the query string would precisely match what the user enters. An Likewise, an attacker could supply a string for <PASSWORD> such as:

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CERT C Secure Coding Standard

STR02-C. Sanitize data passed to complex subsystems

CERT C++ Secure Coding Standard

STR02-CPP. Sanitize data passed to complex subsystems

CVE-2008-2370

describes a vulnerability in Apache Tomcat 4.1.0 through 4.1.37, 5.5.0 through 5.5.26, and 6.0.0 through 6.0.16. When a RequestDispatcher is used, Tomcat performs path normalization before removing the query string from the URI, which allows remote attackers to conduct directory traversal attacks and read arbitrary files via a .. (dot dot) in a request parameter.

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="0b7396bf28455acc-3d2a62ad-4ace4252-9dec8f87-b69cf82c2b1a7857b207b77c"><ac:plain-text-body><![CDATA[

[ISO/IEC TR 24772:2010

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

"Injection [RST]"

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

MITRE CWE

CWE-116, "Improper Encoding or Escaping of Output"

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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="d789c46a34321b64-eed55414-47bf4a48-9d5e8ef8-53c458494831f0838b0a3405"><ac:plain-text-body><![CDATA[

[[OWASP 2005

AA. Bibliography#OWASP 05]]

 

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

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[[OWASP 2007

AA. Bibliography#OWASP 07]]

 

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

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="68f34d731db7f88b-c8047bcf-49ad4c53-a5bbbb87-8af34a0b90848b503345f856"><ac:plain-text-body><![CDATA[

[[OWASP 2008

AA. Bibliography#OWASP 08]]

[Testing for XML Injection (OWASP-DV-008)

https://www.owasp.org/index.php/Testing_for_XML_Injection_%28OWASP-DV-008%29]

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[[W3C 2008

AA. Bibliography#W3C 08]]

4.4.3 Included If Validating

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