SB2018081012 - OpenSUSE Linux update for webkit2gtk3
Published: August 10, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2018-11646)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to mishandling of an unset pageURL in webkitFaviconDatabaseSetIconForPageURL and webkitFaviconDatabaseSetIconURLForPageURL in UIProcess/API/glib/WebKitFaviconDatabase.cpp. A remote attacker can send specially crafted input and cause the service to crash.
2) Information disclosure (CVE-ID: CVE-2018-4190)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to a flaw in the WebKit component. A remote unauthenticated attacker can trick the victim into loading specially crafted CSS mask images and gain access to the target user's credentials.
3) Buffer overflow (CVE-ID: CVE-2018-4199)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to buffer overflow in the WebKit component when handling malicious input. A remote unauthenticated attacker can trick the victim into loading a specially crafted content, trigger a memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Memory corruption (CVE-ID: CVE-2018-4218)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in the WebKit component when handling malicious input. A remote unauthenticated attacker can trick the victim into loading a specially crafted content, trigger a memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Out-of-bounds read (CVE-ID: CVE-2018-4222)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to out-of-bounds read error in WebKit. A remote unauthenticated attacker can trick the victim into loading a specially crafted content, trigger memory corruption and cause the service to crash.
6) Improper input validation (CVE-ID: CVE-2018-4232)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, bypass security restrictions and cause cookies to be overwritten.
7) Memory corruption (CVE-ID: CVE-2018-4233)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in the WebKit component when handling malicious input. A remote unauthenticated attacker can trick the victim into loading a specially crafted content, trigger a memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.