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Message-ID: <04F9AFDCA6560B42B91DB1A429B7D0DE05532DDE@G1W3778.americas.hpqcorp.net> Date: Wed, 22 Aug 2012 15:44:30 +0000 From: ZDI Disclosures <zdi-disclosures@...pingpoint.com> To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, "'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com> Cc: ZDI Disclosures <zdi-disclosures@...com> Subject: ZDI-12-147 : WebKit ContentEditable swapInNode Use-After-Free Remote Code Execution Vulnerability -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ZDI-12-147 : WebKit ContentEditable swapInNode Use-After-Free Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-12-147 August 22, 2012 - -- CVE ID: CVE-2011-3897 - -- CVSS: 7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P - -- Affected Vendors: WebKit.Org - -- Affected Products: WebKit.Org WebKit - -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 12492. For further product information on the TippingPoint IPS, visit: http://www.tippingpoint.com - -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the WebKit library. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists when the library attempts to replace a particular element due to an HTML5 ContentEditable command. Due to the library not accommodating for DOM mutation events that can be made to occur, an aggressor can modify the tree out from underneath the library, leading to a type change. This can be used to trigger a use-after-free condition at which point can lead to code execution under the context of the application. - -- Vendor Response: WebKit.Org has issued an update to correct this vulnerability. More details can be found at: https://bugs.webkit.org/show_bug.cgi?id=71145 - -- Disclosure Timeline: 2011-10-28 - Vulnerability reported to vendor 2012-08-22 - Coordinated public release of advisory - -- Credit: This vulnerability was discovered by: * pa_kt / twitter.com/pa_kt - -- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. TippingPoint does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, TippingPoint provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, TippingPoint provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product. Our vulnerability disclosure policy is available online at: http://www.zerodayinitiative.com/advisories/disclosure_policy/ Follow the ZDI on Twitter: http://twitter.com/thezdi -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 10.2.0 (Build 1950) Charset: utf-8 wsBVAwUBUDT+WlVtgMGTo1scAQKAQwgAkQ8y6IcjxipRJq9js7H9tFuNBDftljEO KUT2IfmJSyIvBwf+vWWqiLNR52W+0YdkeCyKscNVyx3fqQXDF2Xd207b+4L9wXm0 zZKR9HiuYM84Ed1eWyHphrx8cr5qZdaUkRITmYUDhxce4hTsIrCjzXZ3+X+cZJY4 08kKu2U9AoKInGNRwwmxEd3kdxkG90fKzf45VPuOwjbHEVB17VROqbxW6FuC1eBR +IM3n5QyzAVVdGjNww1WagWNiWRvZE+mVL7kK4rQhcg3U6QPx74VcFsUweyomxKN BTwB8lXlppZDTTan20dhR3HJrxFSiUUWmMa3s/VLzCDnuVbHYPy8fw== =A7x+ -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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