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