Vulnerability identifier: #VU32797

Vulnerability risk: Low

CVSSv3.1: 7.3 [CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-2337

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Sudo
Client/Desktop applications / Software for system administration

Vendor: Sudo

Description

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

sudo 1.6.x and 1.7.x before 1.7.9p1, and 1.8.x before 1.8.4p5, does not properly support configurations that use a netmask syntax, which allows local users to bypass intended command restrictions in opportunistic circumstances by executing a command on a host that has an IPv4 address.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Sudo: 1.7.0 - 1.8.4p4

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081432.html
http://secunia.com/advisories/49219
http://secunia.com/advisories/49244
http://secunia.com/advisories/49291
http://secunia.com/advisories/49948
http://www.debian.org/security/2012/dsa-2478
http://www.mandriva.com/security/advisories?name=MDVSA-2012:079
http://www.securitytracker.com/id?1027077
http://www.sudo.ws/sudo/alerts/netmask.html
http://bugzilla.redhat.com/show_bug.cgi?id=820677
http://www.suse.com/security/cve/CVE-2012-2337/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.