The parseAddress code in (1) SquirrelMail 1.4.0 and (2) GPG Plugin 1.1 allows remote attackers to execute commands via shell metacharacters in the "To:" field.
optionsidentities.php in SquirrelMail 1.4.4 and earlier uses the extract function to process the $POST variable, which allows remote attackers to modify or read the preferences of other users, conduct cross-site scripting XSS) attacks, and write arbitrary files.
PHP remote file inclusion vulnerability in webmail.php in SquirrelMail before 1.4.4 allows remote attackers to execute arbitrary PHP code by modifying a URL parameter to reference a URL on a remote web server that contains the code.
prefs.php in SquirrelMail before 1.4.4, with registerglobals enabled, allows remote attackers to inject local code into the SquirrelMail code via custom preference handlers.
Cross-site scripting (XSS) vulnerability in webmail.php in SquirrelMail before 1.4.4 allows remote attackers to inject arbitrary web script or HTML via certain integer variables.
Dynamic variable evaluation vulnerability in compose.php in SquirrelMail 1.4.0 to 1.4.7 allows remote attackers to overwrite arbitrary program variables and read or write the attachments and preferences of other users.
DISPUTED PHP remote file inclusion vulnerability in functions/plugin.php in SquirrelMail 1.4.6 and earlier, if registerglobals is enabled and magicquotesgpc is disabled, allows remote attackers to execute arbitrary PHP code via a URL in the plugins array parameter. NOTE: this issue has been disputed by third parties, who state that Squirrelmail provides prominent warnings to the administrator when registerglobals is enabled. Since the varieties of administrator negligence are uncountable, perhaps this type of issue should not be included in CVE. However, the original developer has posted a security advisory, so there might be relevant real-world environments under which this vulnerability is applicable.
Cross-site request forgery (CSRF) vulnerability in compose.php in SquirrelMail 1.4.0 through 1.4.9a allows remote attackers to send e-mails from arbitrary users via certain data in the SRC attribute of an IMG element.
Multiple cross-site scripting (XSS) vulnerabilities in the HTML filter in SquirrelMail 1.4.0 through 1.4.9a allow remote attackers to inject arbitrary web script or HTML via the (1) data: URI in an HTML e-mail attachment or (2) various non-ASCII character sets that are not properly filtered when viewed with Microsoft Internet Explorer.
From SquirrelMail vulnerability report:
An issue was fixed that allowed an attacker to possibly steal user data by hijacking the SquirrelMail login session.
Credits: Tomas Hoger
Patch: http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=rev&revision=13676
A, From SquirrelMail vulnerability report (http://www.squirrelmail.org/security/issue/2009-05-08):
Two issues were fixed that both allowed an attacker to run arbitrary script (XSS) on most any SquirrelMail page by getting the user to click on specially crafted SquirrelMail links.
Credits: Niels Teusink and Christian Balzer
Patch: http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=rev&revision=13670
B, From SquirrelMail vulnerability report: (http://www.squirrelmail.org/security/issue/2009-05-09):
An issue was fixed wherein input to the contrib/decryptheaders.php script was not sanitized and allowed arbitrary script execution upon submission of certain values.
Credits: Niels Teusink
Patch: http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=rev&revision=13672
From SquirrelMail vulnerability report:
An issue was fixed that allowed arbitrary server-side code execution when SquirrelMail was configured to use the example "mapypalias" username mapping functionality.
Credits: Niels Teusink
Updated upstream patch (2009-05-21): http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-14-STABLE/squirrelmail/functions/imapgeneral.php?r1=13549&r2=13733&view=patch
From Squirrelmail vulnerability report:
An issue was fixed that allowed phishing and cross-site scripting (XSS) attacks to be run by surreptitious placement of content in specially-crafted emails sent to SquirrelMail users.
Credits: Luc Beurton
Patch: http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=rev&revision=13667
functions/pageheader.php in SquirrelMail 1.4.21 and earlier does not prevent page rendering inside a frame in a third-party HTML document, which makes it easier for remote attackers to conduct clickjacking attacks via a crafted web site.
Multiple cross-site scripting (XSS) flaws were found in the SquirrelMail webmail client: XSS flaws in generic options inputs, XSS flaw in the SquirrelSpell plug-in, XSS flaw in the Index Order page.
Also protection against Cross-site Request Forgery (CSRF) flaws has been added to the empty trash feature and to the Index Order page.
The CSRF flaws got a dedicated CVE identifier of CVE-2011-2753. For further information have a look at: [1] https://bugzilla.redhat.com/showbug.cgi?id=CVE-2011-2753
Upstream advisory: [2] http://www.squirrelmail.org/security/issue/2011-07-11
Relevant upstream patch: [3] http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=revision&revision=14119
A denial of service flaw was found in the way SquirrelMail processed random login attempts with 8-bit characters in the password. A remote attacker could use this flaw to cause the server system potentially to run out of the hard disk space via random login attempts, causing SquirrelMail temporarily to accept the login and create a preferences file for the given username.
References: [1] http://www.squirrelmail.org/security/issue/2010-07-23
Upstream patch: [2] http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-14-STABLE/squirrelmail/functions/imapgeneral.php?view=patch&r1=13972&r2=13971&pathrev=13972
Affected Versions: <= v1.4.20
Register Globals: Registerglobals does not have to be on for this issue.
Credit: Issue discovered by Mikhail Goriachev