Buffer overflow in WebKitGTK+ - CVE-2019-8375
Published: April 18, 2019 / Updated: June 17, 2021
Vulnerability identifier: #VU18301
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2019-8375
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: WebKitGTK
Affected software:
WebKitGTK+
WebKitGTK+
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the UIProcess subsystem when processing an overly large script dialog size that exceeds the web view size. A remote attacker can send a specially crafted request to the affected application, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-8375
Install updates from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.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