Permissions, Privileges, and Access Controls in openvswitch

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU43764

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-3449

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

Open vSwitch 1.4.2 uses world writable permissions for (1) /var/lib/openvswitch/pki/controllerca/incoming/ and (2) /var/lib/openvswitch/pki/switchca/incoming/, which allows local users to delete and overwrite arbitrary files.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Open vSwitch: 1.4.2

External links

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683665
http://www.openwall.com/lists/oss-security/2012/08/02/6
http://www.openwall.com/lists/oss-security/2012/08/03/6
http://www.securityfocus.com/bid/54789
http://www.securityfocus.com/bid/54794
http://bugzilla.redhat.com/show_bug.cgi?id=845350
http://exchange.xforce.ibmcloud.com/vulnerabilities/77417

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.