Input validation error in gnome-shell

1) Input validation error

EUVDB-ID: #VU41744

Risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-7220

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

js/ui/screenShield.js in GNOME Shell (aka gnome-shell) before 3.8 allows physically proximate attackers to execute arbitrary commands by leveraging an unattended workstation with the keyboard focus on the Activities search. Per: https://cwe.mitre.org/data/definitions/77.html "CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')"

Mitigation

Install update from vendor's website.

Vulnerable software versions

gnome-shell: 3.0.0 - 3.7.91

CPE2.3

• cpe:2.3:a:gnome:gnome-shell:3.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.1.92:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.2.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.3.92:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.5.92:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.6.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:gnome-shell:3.7.91:*:*:*:*:*:*:*

External links

https://www.openwall.com/lists/oss-security/2013/12/27/4
https://www.openwall.com/lists/oss-security/2013/12/27/6
https://www.openwall.com/lists/oss-security/2013/12/27/8
https://bugzilla.gnome.org/show_bug.cgi?id=686740
https://bugzilla.redhat.com/show_bug.cgi?id=1030431
https://github.com/o2platform/DefCon_RESTing/tree/master/Live-Demos/Neo4j

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.