CVE-2018-12293 Information

Description

The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit as used in WebKitGTK+ prior to version 2.20.3 and WPE WebKit prior to version 2.20.1 is vulnerable to a heap-based buffer overflow triggered by an integer overflow which could be abused by crafted HTML content.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.html http://www.openwall.com/lists/oss-security/2018/06/14/1 http://www.securityfocus.com/archive/1/542087/100/0/threaded https://bugs.webkit.org/show_bug.cgi?id=186384 https://security.gentoo.org/glsa/201808-04 https://trac.webkit.org/changeset/232618 https://usn.ubuntu.com/3687-1/ https://www.exploit-db.com/exploits/45205/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8