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LetterGrade Cross-Site Scripting and Script Insertion Vulnerabilities
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Secunia Advisory:
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SA26768
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Release Date:
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2007-09-14
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Last Update:
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2007-09-20
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Popularity:
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4,083 views
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Critical:
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Moderately critical
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Impact:
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Cross Site Scripting
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | LetterGrade
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| CVE reference: | CVE-2007-4945
CVE-2007-4946
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Description:
agentsteal has reported some vulnerabilities in LetterGrade, which can be exploited by malicious people to conduct cross-site scripting attacks or by malicious users to conduct script-insertion attacks.
1) Input passed as e.g. a student's email address is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which is executed in a user's browser session in context of an affected site when the malicious data is viewed.
2) Input passed to the "year" parameter in genbrws/Student/cal_month.php3 is not properly sanitised before being returned to a user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site. Reportedly, other parameters in the calendar are also affected.
A full path disclosure and user enumeration weakness have also been reported.
Solution:
Edit the source code to ensure that input is properly sanitised.
Provided and/or discovered by:
agentsteal
Changelog:
2007-09-20: Added CVE reference.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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