Ubuntu update for webkit2gtk

1) Use-after-free

EUVDB-ID: #VU48726

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13558

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the AudioSourceProviderGStreamer functionality. A remote attacker can trick a victim to visit a specially crafted webpage and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected package webkit2gtk to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.10

libwebkit2gtk-4.0-37 (Ubuntu package): before 2.30.5-0ubuntu0.20.10.1

libjavascriptcoregtk-4.0-18 (Ubuntu package): before 2.30.5-0ubuntu0.20.10.1

External links

http://ubuntu.com/security/notices/USN-4739-1

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.