Permissions, Privileges, and Access Controls in ldns

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU33502

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-3209

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

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

The ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which might allow local users to obtain the private key by reading the file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ldns: 1.6.0 - 1.6.11

CPE2.3

• cpe:2.3:a:unbound_net:ldns:1.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:unbound_net:ldns:1.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:unbound_net:ldns:1.6.2:*:*:*:*:*:*:*

External links

https://www.openwall.com/lists/oss-security/2014/05/03/2
https://www.openwall.com/lists/oss-security/2014/05/05/4
https://www.securityfocus.com/bid/67200
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=746758
https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=573

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.