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Directory traversal vulnerability in Yet another Bulletin Board (YaBB) 2.1 and earlier allows remote authenticated users to execute arbitrary Perl code via a .. (dot dot) in the userlanguage profile setting, which sets the userlanguage key of the member hash, and is propagated to the language variable in (1) HelpCentre.pl and (2) ICQPager.pl, (3) the use_lang variable in Subs.pl, and the actlang variable in (4) Post.pl and (5) InstantMessage.pl; as demonstrated by pointing userlanguage to the English folder, modifying English/HelpCentre.lng file to contain Perl statements, and then invoking the help action in YaBB.pl.
CRLF injection vulnerability in Yet another Bulletin Board (YaBB) 2.1 allows remote attackers to obtain administrative access via requests to (1) register.pl or (2) profile.pl that write CRLF sequences to a .vars file. NOTE: this can be leveraged to execute arbitrary code.
Cross-site scripting (XSS) vulnerability in index.php in Yet another Bulletin Board (YaBB) allows remote attackers to inject arbitrary web script or HTML via the categories parameter.
SQL injection vulnerability in profile.php in YaBB SE 1.5.5 and earlier allows remote attackers to execute SQL commands via a double-encoded user parameter in a viewprofile action.
Interpretation conflict in YaBB before 2.1 allows remote authenticated users to inject arbitrary web script or HTML via HTML in a file with a GIF file extension, which causes the HTML to be executed by a victim who views the file in Internet Explorer as a result of CVE-2005-3312. NOTE: it could be argued that this vulnerability is due to a design flaw in Internet Explorer and the proper fix should be in that browser; if so, then this should not be treated as a vulnerability in YaBB.
YabbSE 1.5.5c allows remote attackers to obtain sensitive information via a direct request to ssi_examples.php, which reveals the path.
Cross-site scripting (XSS) vulnerability in usersrecentposts in YaBB 2.0 rc1 allows remote attackers to inject arbitrary web script or HTML via the username parameter.
Cross-site scripting (XSS) vulnerability in YaBB.pl for YaBB 2.0 RC1 allows remote attackers to inject arbitrary web script or HTML via the username parameter in a usersrecentposts action.
Cross-site request forgery (CSRF) vulnerability in YaBB 1 GOLD SP 1.3.2 allows remote attackers to perform unauthorized actions as the administrative user via a link or IMG tag to YaBB.pl that specifies the desired action, id, and moda parameters.
Cross-site scripting (XSS) vulnerability in YaBB.pl in YaBB 1 GOLD SP 1.3.2 allows remote attackers to inject arbitrary web script or HTML via a hex-encoded to parameter. NOTE: some sources say that the board parameter is affected, but this is incorrect.
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