IO Slaves KDE Insufficient Input Validation

2014.11.20
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-79


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

Vulnerability title: Insufficient Input Validation By IO Slaves In KDE e.V. KDE CVE: CVE-2014-8600 Vendor: KDE e.V. Product: KDE Affected version: kwebkitpart <= 1.3.4, kde-runtime <= 4.14.3, kio-extras <= 5.1.1 Fixed version: Contact distribution vendor Reported by: T. Brown and D. Burton Details: Whilst investigating how KDE handles custom protocols, it was discovered that a number of the protocol handlers (referred to as IO slaves) did not satisfactorily handle malicious input. It is possible for an attacker to inject JavaScript by manipulating IO slave URI such that the JavaScript from the manipulated request is returned in the response. Example IO slaves that trigger this behaviour include: zip trash tar thumbnail smtps smtp smb remote recentdocuments nntps nntp network mbox ldaps ldap fonts file desktop cgi bookmarks ar The following code will trigger all vulnerable IO slaves: for x in /usr/share/kde4/services/*.protocol do proto=`basename $x | cut -f 1 -d\.` kfmclient newTab "$proto://hhdhdhhdhdhdh.google.com/\"><script>alert(\"$proto\"+document.domain);</script>" done Further details at: https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-8600/ Copyright: Copyright (c) Portcullis Computer Security Limited 2014, All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered in any way without the express written consent of Portcullis Computer Security Limited. Disclaimer: The information herein contained may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Portcullis Computer Security Limited) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information. ############################################################### This email originates from the systems of Portcullis Computer Security Limited, a Private limited company, registered in England in accordance with the Companies Act under number 02763799. The registered office address of Portcullis Computer Security Limited is: Portcullis House, 2 Century Court, Tolpits Lane, Watford, United Kingdom, WD18 9RS. The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Any opinions expressed are those of the individual and do not represent the opinion of the organisation. Access to this email by persons other than the intended recipient is strictly prohibited. If you are not the intended recipient, any disclosure, copying, distribution or other action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this email is subject to the terms and conditions expressed in the applicable Portcullis Computer Security Limited terms of business. ############################################################### ##################################################################################### This e-mail message has been scanned for Viruses and Content and cleared by MailMarshal. #####################################################################################

References:

https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-8600/


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