OpenSUSE Linux update for pdns-recursor

1) Improper access control

EUVDB-ID: #VU29577

Risk: Medium

CVSSv4.0: 2.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-14196

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to  ACL applied to the internal web server via "webserver-allow-from" is not properly enforced. A remote attacker can send HTTP queries to the internal web server, bypassing the restriction.

Successful exploitation of the vulnerability requires that the the API webserver is enabled (not the default value).

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1 - 15.2

SUSE Package Hub for SUSE Linux Enterprise: 12

SUSE Linux: 15

CPE2.3

• cpe:2.3:o:suse:opensuse:15.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse:15.2:*:*:*:*:*:*:*
• cpe:2.3:a:suse:suse_package_hub_for_suse_linux_enterprise:12:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:suse_linux:15:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00045.html

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. However, proof of concept for this vulnerability is available.