Multiple vulnerabilities in GNOME Web (Epiphany)



Published: 2022-01-17
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2021-45088
CVE-2021-45087
CVE-2021-45086
CVE-2021-45085
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		GNOME Web (Epiphany)
Client/Desktop applications / Web browsers

Vendor Gnome Development Team

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU59665

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-45088

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data via an error page. 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GNOME Web (Epiphany): 41.0, 40.0 - 40.3

CPE2.3 External links

http://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
http://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
http://www.debian.org/security/2022/dsa-5042

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Cross-site scripting

EUVDB-ID: #VU59664

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-45087

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 when View Source mode or Reader mode is used. A remote attacker can 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GNOME Web (Epiphany): 41.0, 40.0 - 40.3

CPE2.3 External links

http://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
http://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
http://www.debian.org/security/2022/dsa-5042

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

3) Cross-site scripting

EUVDB-ID: #VU59663

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-45086

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, because a server's suggested_filename is used as the pdf_name value in PDF.js. A remote attacker can and execute arbitrary HTML and script code in user's browser in context of vulnerable website.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

GNOME Web (Epiphany): 41.0, 40.0 - 40.3

CPE2.3 External links

http://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
http://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
http://www.debian.org/security/2022/dsa-5042

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

4) Cross-site scripting

EUVDB-ID: #VU59662

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-45085

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via an "about: page" URL. A remote attacker can permanently store and execute arbitrary JavaScript code on the affected system, when the victim opens the Most Visited list tab (ephy-about:overview) in browser.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GNOME Web (Epiphany): 41.0, 40.0 - 40.3

CPE2.3 External links

http://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
http://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
http://www.debian.org/security/2022/dsa-5042

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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