Gentoo: GLSA-200408-02: Courier: Cross-site scripting vulnerability in SqWebMail

    Date04 Aug 2004
    CategoryGentoo
    60
    Posted ByLinuxSecurity Advisories
    The SqWebMail web application, included in the Courier suite, is vulnerable to cross-site scripting attacks.
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    Gentoo Linux Security Advisory                           GLSA 200408-02
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: Courier: Cross-site scripting vulnerability in SqWebMail
          Date: August 04, 2004
          Bugs: #58020
            ID: 200408-02
    
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    Synopsis
    ========
    
    The SqWebMail web application, included in the Courier suite, is
    vulnerable to cross-site scripting attacks.
    
    Background
    ==========
    
    Courier is an integrated mail and groupware server based on open
    protocols. It provides ESMTP, IMAP, POP3, webmail, and mailing list
    services within a single framework. The webmail functionality included
    in Courier called SqWebMail allows you to access mailboxes from a web
    browser.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package           /   Vulnerable   /                  Unaffected
        -------------------------------------------------------------------
      1  mail-mta/courier       <= 0.45.6              >= 0.45.6.20040618
    
    Description
    ===========
    
    Luca Legato found that SqWebMail is vulnerable to a cross-site
    scripting (XSS) attack. An XSS attack allows an attacker to insert
    malicious code into a web-based application. SqWebMail doesn't filter
    appropriately data coming from message headers before displaying them.
    
    Impact
    ======
    
    By sending a carefully crafted message, an attacker can inject and
    execute script code in the victim's browser window. This allows to
    modify the behaviour of the SqWebMail application, and/or leak session
    information such as cookies to the attacker.
    
    Workaround
    ==========
    
    There is no known workaround at this time. All users are encouraged to
    upgrade to the latest available version of Courier.
    
    Resolution
    ==========
    
    All Courier users should upgrade to the latest version:
    
        # emerge sync
    
        # emerge -pv ">=mail-mta/courier-0.45.6.20040618"
        # emerge ">=mail-mta/courier-0.45.6.20040618"
    
    References
    ==========
    
      [ 1 ] CAN-2004-0591
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0591
      [ 2 ] XSS definition
            http://www.cert.org/advisories/CA-2000-02.html
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
        http://security.gentoo.org/glsa/glsa-200408-02.xml
    
    Concerns?
    =========
    
    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users machines is of utmost
    importance to us. Any security concerns should be addressed to
    This email address is being protected from spambots. You need JavaScript enabled to view it.
    	 or alternatively, you may file a bug at
    http://bugs.gentoo.org.
    
    License
    =======
    
    Copyright 2004 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).
    
    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.
    
    http://creativecommons.org/licenses/by-sa/1.0
    
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