An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large number of queries directed to a target, even with a lower amplification ratio compared to versions of Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for CVE-2020-12662, and it does not affect upstream versions of Unbound.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has unbound packages installed that are affected by multiple vulnerabilities:

  - An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of     erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large     number of queries directed to a target, even with a lower amplification ratio compared to versions of     Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for     CVE-2020-12662, and it does not affect upstream versions of Unbound. (CVE-2020-10772)

  - Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an NXNSAttack issue. This     is triggered by random subdomains in the NSDNAME in NS records. (CVE-2020-12662)

  - Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.
    (CVE-2020-12663)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has unbound packages installed that are affected by a vulnerability:

  - An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of     erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large     number of queries directed to a target, even with a lower amplification ratio compared to versions of     Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for     CVE-2020-12662, and it does not affect upstream versions of Unbound. (CVE-2020-10772)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of unbound installed on the remote host is prior to 1.6.6-5. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2020-1463 advisory.

    An incomplete fix forCVE-2020-12662was shipped for Unbound in Red Hat Enterprise Linux 7, as part of     erratumRHSA-2020-2414. Vulnerable versions of Unbound could still amplify an incoming query into a large     number of queries directed to a target, even with a lower amplification ratio compared to versions of     Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix     forCVE-2020-12662, and it does not affect upstream versions of Unbound. (CVE-2020-10772)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:2642 advisory.

  - An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of     erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large     number of queries directed to a target, even with a lower amplification ratio compared to versions of     Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for     CVE-2020-12662, and it does not affect upstream versions of Unbound. (CVE-2020-10772)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Security Fix(es) :

  - unbound: incomplete fix for CVE-2020-12662 in RHEL7     (CVE-2020-10772)

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-2642 advisory.

    [1.6.6-5]
    - Fix incomplete amplifying-an-incoming-query patch
    - Resolves: rhbz#1846424

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:2642 advisory.

    The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

    Security Fix(es):

    * unbound: incomplete fix for CVE-2020-12662 in RHEL7 (CVE-2020-10772)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
154518	NewStart CGSL CORE 5.05 / MAIN 5.05 : unbound Multiple Vulnerabilities (NS-SA-2021-0142)	Nessus	NewStart CGSL Local Security Checks	high
143945	NewStart CGSL CORE 5.04 / MAIN 5.04 : unbound Vulnerability (NS-SA-2020-0084)	Nessus	NewStart CGSL Local Security Checks	high
138629	Amazon Linux 2 : unbound (ALAS-2020-1463)	Nessus	Amazon Linux Local Security Checks	high
137761	CentOS 7 : unbound (RHSA-2020:2642)	Nessus	CentOS Local Security Checks	high
137743	Scientific Linux Security Update : unbound on SL7.x x86_64 (20200622)	Nessus	Scientific Linux Local Security Checks	high
137740	Oracle Linux 7 : unbound (ELSA-2020-2642)	Nessus	Oracle Linux Local Security Checks	high
137715	RHEL 7 : unbound (RHSA-2020:2642)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2020-10772

high

Tenable Plugins

high

high

high

high

high

high

high