Vulnerability CVE-2019-8375
Published: 2019-02-24

Description:
The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and WebKitGTK+ through 2.22.6 and other products, does not prevent the script dialog size from exceeding the web view size, which allows remote attackers to cause a denial of service (Buffer Overflow) or possibly have unspecified other impact, related to UIProcess/API/gtk/WebKitScriptDialogGtk.cpp, UIProcess/API/gtk/WebKitScriptDialogImpl.cpp, and UIProcess/API/gtk/WebKitWebViewGtk.cpp, as demonstrated by GNOME Web (aka Epiphany).

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Webkitgtk -> Webkitgtk 
Webkitgtk -> Webkitgtk+ 
Opensuse -> LEAP 
Canonical -> Ubuntu linux 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.html
https://bugs.webkit.org/show_bug.cgi?id=184875
https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531
https://trac.webkit.org/changeset/241515/webkit
https://usn.ubuntu.com/3948-1/
https://www.exploit-db.com/exploits/46465/
https://www.inputzero.io/2019/02/fuzzing-webkit.html
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