Ubuntu update for WebKitGTK+



Published: 2018-01-03
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2017-13856
CVE-2017-13866
CVE-2017-13870
CVE-2017-7156
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Ubuntu
Operating systems & Components / Operating system

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU9668

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13856

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into loading a specially crafted web content, trigger memory corruption in the WebKit component and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages

Ubuntu 17.10:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.16.04.1

Vulnerable software versions

Ubuntu: 16.04 - 17.10

External links

http://www.ubuntu.com/usn/usn-3514-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Memory corruption

EUVDB-ID: #VU9670

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13866

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into loading a specially crafted web content, trigger memory corruption in the WebKit component and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages

Ubuntu 17.10:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.16.04.1

Vulnerable software versions

Ubuntu: 16.04 - 17.10

External links

http://www.ubuntu.com/usn/usn-3514-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Memory corruption

EUVDB-ID: #VU9669

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13870

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into loading a specially crafted web content, trigger memory corruption in the WebKit component and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages

Ubuntu 17.10:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.16.04.1

Vulnerable software versions

Ubuntu: 16.04 - 17.10

External links

http://www.ubuntu.com/usn/usn-3514-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Memory corruption

EUVDB-ID: #VU9666

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7156

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into loading a specially crafted web content, trigger memory corruption in the WebKit component and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages

Ubuntu 17.10:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37 2.18.4-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18 2.18.4-0ubuntu0.16.04.1

Vulnerable software versions

Ubuntu: 16.04 - 17.10

External links

http://www.ubuntu.com/usn/usn-3514-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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