SB2018043038 - Ubuntu update for webkit2gtk
Published: April 30, 2018 Updated: October 30, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 18 vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2018-4127)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
2) Memory corruption (CVE-ID: CVE-2018-4165)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
3) Memory corruption (CVE-ID: CVE-2018-4163)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
4) Memory corruption (CVE-ID: CVE-2018-4162)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
5) Memory corruption (CVE-ID: CVE-2018-4161)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
6) Memory corruption (CVE-ID: CVE-2018-4146)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and cause the system to crash.
7) Cross-site scripting (CVE-ID: CVE-2018-4133)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the WebKit component. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
8) Memory corruption (CVE-ID: CVE-2018-4129)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
9) Memory corruption (CVE-ID: CVE-2018-4128)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
10) Memory corruption (CVE-ID: CVE-2018-4101)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
11) Memory corruption (CVE-ID: CVE-2018-4125)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
12) Memory corruption (CVE-ID: CVE-2018-4122)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
13) Memory corruption (CVE-ID: CVE-2018-4120)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
14) Memory corruption (CVE-ID: CVE-2018-4119)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
15) Memory corruption (CVE-ID: CVE-2018-4118)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
16) Information disclosure (CVE-ID: CVE-2018-4117)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to input validation flaw in the WebKit component fetch API. A remote attacker can bypass cross-origin restrictions and obtain potentially sensitive information.
17) Memory corruption (CVE-ID: CVE-2018-4114)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 9.3 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error in the WebKit component. A remote attacker can trigger memory corruption and execute arbitrary code with elevated privileges.
18) Denial of service (CVE-ID: CVE-2018-4113)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to an array indexing error in WebKit javascript core. A remote attacker can trigger an ASSERT failure and cause the system to crash.
Remediation
Install update from vendor's website.