Permissions, Privileges, and Access Controls in chromium (Alpine package)

1) Universal cross-site scripting

EUVDB-ID: #VU29049

Risk: Medium

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-2020-6506

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

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 Google Chrome WebView system component. The vulnerability allows cross-origin iframes to execute arbitrary JavaScript in the top-level document.

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

chromium (Alpine package): 83.0.4103.61-r0 - 83.0.4103.97-r0

External links

http://git.alpinelinux.org/aports/commit/?id=d458817a5891a75e29740a1cd6d29317691bdd10
http://git.alpinelinux.org/aports/commit/?id=45f0d495cc9725bb39fdd397103625bf0d2e7c02

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.