Multiple vulnerabilities in GNOME Display Manager

Published: 2012-12-21 | Updated: 2020-08-11

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2013-4169 CVE-2010-2387
CWE-ID	CWE-59 CWE-255
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	GNOME Display Manager Client/Desktop applications / Other client software
Vendor	Gnome Development Team

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Link following

EUVDB-ID: #VU42592

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-2013-4169

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GNOME Display Manager: 0.7 - 2.20.10

External links

http://rhn.redhat.com/errata/RHSA-2013-1213.html
http://secunia.com/advisories/54661
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=988498

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) Credentials management

EUVDB-ID: #VU43243

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2010-2387

CWE-ID: CWE-255 - Credentials Management