Vulnerability 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).
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Webkitgtk | Webkitgtk | <= 2.23.90 |
| Webkitgtk | Webkitgtk\+ | <= 2.22.6 |
| Opensuse | Leap | 15.0 |
| Canonical | Ubuntu Linux | 18.04 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.htmlMailing ListThird Party Advisory
- https://bugs.webkit.org/show_bug.cgi?id=184875Issue TrackingPermissions RequiredThird Party Advisory
- https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531PatchThird Party Advisory
- https://trac.webkit.org/changeset/241515/webkitPatchVendor Advisory
- https://usn.ubuntu.com/3948-1/Third Party Advisory
- https://www.exploit-db.com/exploits/46465/ExploitThird Party AdvisoryVDB Entry
- https://www.inputzero.io/2019/02/fuzzing-webkit.htmlExploitThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.htmlMailing ListThird Party Advisory
- https://bugs.webkit.org/show_bug.cgi?id=184875Issue TrackingPermissions RequiredThird Party Advisory
- https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531PatchThird Party Advisory
- https://trac.webkit.org/changeset/241515/webkitPatchVendor Advisory
- https://usn.ubuntu.com/3948-1/Third Party Advisory
- https://www.exploit-db.com/exploits/46465/ExploitThird Party AdvisoryVDB Entry
FAQ
What is CVE-2019-8375?
CVE-2019-8375 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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, whic...
How severe is CVE-2019-8375?
CVE-2019-8375 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-8375?
Check the references section above for vendor advisories and patch information. Affected products include: Webkitgtk Webkitgtk, Webkitgtk Webkitgtk\+, Opensuse Leap, Canonical Ubuntu Linux.