YaBB through 2.5.2: 'guestlanguage' Cookie Parameter Local File Include Vulnerability

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 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.

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.

CRLF injection vulnerability in YaBB 1 Gold before 1.3.2 allows remote attackers to modify text file contents via the subject variable.

Unknown vulnerability in Adminedit.pl YaBB 1 Gold before 1.3.2 allows attackers to execute arbitrary code via settings.pl.

SQL injection vulnerability in SSI.php in YaBB SE 1.5.4, 1.5.3, and possibly other versions before 1.5.5 allows remote attackers to execute arbitrary SQL commands via the ID_MEMBER parameter to the (1) recentTopics and (2) welcome functions.

SQL injection vulnerability in post.php for YaBB SE 1.5.4 and 1.5.5 allows remote attackers to obtain hashed passwords via the quote parameter.

Multiple SQL injection vulnerabilities in YaBB SE 1.5.4 through 1.5.5b allow remote attackers to execute arbitrary SQL via (1) the msg parameter in ModifyMessage.php or (2) the postid parameter in ModifyMessage.php.

Directory traversal vulnerability in ModifyMessage.php in YaBB SE 1.5.4 through 1.5.5b allows remote attackers to delete arbitrary files via a .. (dot dot) in the attachOld parameter.

YaBB SE 1.5.1 allows remote attackers to obtain sensitive information via a direct HTTP request to Admin.php, which reveals the full path in a PHP error message.

Post.pl in YaBB 1 Gold SP 1.2 allows remote attackers to modify records in the board's .txt file via carriage return characters in the subject field.

Cross-site scripting (XSS) vulnerability in YaBB 1 Gold(SP1.3) and YaBB SE 1.5.1 Final allows remote attackers to inject arbitrary web script via the background:url property in (1) glow or (2) shadow tags.

Cross-site scripting (XSS) vulnerabilities in Yet Another Bulletin Board (YaBB) 1.5.0 allow remote attackers to execute arbitrary script as other users and possibly steal authentication information via cookies by injecting arbitrary HTML or script into (1) news_icon of news_template.php, and (2) threadid and subject of index.html

SSI.php in YaBB SE 1.5.2 allows remote attackers to execute arbitrary PHP code by modifying the sourcedir parameter to reference a URL on a remote web server that contains the code.

Cross-site scripting (XSS) vulnerability in YaBB.pl in Yet Another Bulletin Board (YaBB) 1 Gold SP 1 allows remote attackers to inject arbitrary web script or HTML via the num parameter.

Cross-site scripting (XSS) vulnerability in index.php in Yet Another Bulletin Board (YaBB) 1.40 and 1.41 allows remote attackers to inject arbitrary web script or HTML via the password (passwrd) parameter.

Yet Another Bulletin Board (YaBB) 1.40 and 1.41 does not require a user to submit the correct password before changing it to a new password, which allows remote attackers to modify passwords by stealing the cookie of another user, modifying the expiretime setting, and submitting the change in a profile2 action to index.php.