The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2026 advisory.

    Red Hat Identity Management (IdM) is a centralized authentication, identity management, and authorization     solution for both traditional and cloud-based enterprise environments.

    Security Fix(es):

    * slapi-nis: NULL dereference (DoS) with specially crafted Binding DN (CVE-2021-3480)

    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.

The version of slapi-nis installed on the remote host is prior to 0.56.5-4. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1646 advisory.

    A flaw was found in slapi-nis. A NULL pointer dereference during the parsing of the Binding DN could allow     an unauthenticated attacker to crash the 389-ds-base directory server. The highest threat from this     vulnerability is to system availability. (CVE-2021-3480)

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.

According to the version of the slapi-nis package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - A flaw was found in slapi-nis in versions before     0.56.7. A NULL pointer dereference during the parsing     of the Binding DN could allow an unauthenticated     attacker to crash the 389-ds-base directory server. The     highest threat from this vulnerability is to system     availability.(CVE-2021-3480)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2022:0185 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

      CVE-2021-3480:
      A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing     of the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The     highest threat from this vulnerability is to system availability.

Tenable has extracted the preceding description block directly from the Tencent 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing of     the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The     highest threat from this vulnerability is to system availability. (CVE-2021-3480)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:1983 advisory.

    Red Hat Identity Management (IdM) is a centralized authentication, identity management, and authorization     solution for both traditional and cloud-based enterprise environments.

    Security Fix(es):

    * slapi-nis: NULL dereference (DoS) with specially crafted Binding DN (CVE-2021-3480)

    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.

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2021-1758:02 advisory.

    * slapi-nis: NULL dereference (DoS) with specially crafted Binding DN (CVE-2021-3480)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2021:1983 advisory.

  - slapi-nis: NULL dereference (DoS) with specially crafted Binding DN (CVE-2021-3480)

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 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2027 advisory.

    Red Hat Identity Management (IdM) is a centralized authentication, identity management, and authorization     solution for both traditional and cloud-based enterprise environments.

    Security Fix(es):

    * slapi-nis: NULL dereference (DoS) with specially crafted Binding DN (CVE-2021-3480)

    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.

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2021:2032 advisory.

    The slapi-nis packages contain the NIS server plug-in and the Schema Compatibility plug-in for use with     the 389 Directory Server.

    Security Fix(es):

    * slapi-nis: NULL dereference (DoS) with specially crafted Binding DN (CVE-2021-3480)

    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.

The remote Oracle Linux 7 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2021-2032 advisory.

    [0.56.5-4]
    - CVE 2021-3480:  slapi-nis: NULL dereference (DoS) with specially crafted Binding DN
    - Resolves: rhbz#1942937

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 Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1983 advisory.

    slapi-nis     [0.56.6-2]
    - CVE 2021-3480:  idm:DL1/slapi-nis: NULL dereference (DoS) with specially crafted Binding DN
    - Resolves: rhbz#1944713

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.

According to the version of the slapi-nis package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - A flaw was found in slapi-nis. A NULL pointer     dereference during the parsing of the Binding DN could     allow an unauthenticated attacker to crash the     389-ds-base directory server. The highest threat from     this vulnerability is to system     availability.(CVE-2021-3480)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:1983 advisory.

  - A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing of     the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The     highest threat from this vulnerability is to system availability. (CVE-2021-3480)

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	Published	Updated	Severity
149726	RHEL 8 : ipa (RHSA-2021:2026)	Nessus	Red Hat Local Security Checks	5/19/2021	11/7/2024	high
150975	Amazon Linux 2 : slapi-nis (ALAS-2021-1646)	Nessus	Amazon Linux Local Security Checks	6/23/2021	12/11/2024	high
153051	EulerOS 2.0 SP5 : slapi-nis (EulerOS-SA-2021-2348)	Nessus	Huawei Local Security Checks	9/7/2021	12/1/2023	high
239285	TencentOS Server 3: slapi-nis (TSSA-2022:0185)	Nessus	Tencent Local Security Checks	6/16/2025	12/5/2025	high
251712	Linux Distros Unpatched Vulnerability : CVE-2021-3480	Nessus	Misc.	8/19/2025	4/28/2026	high
149668	RHEL 8 : idm:DL1 (RHSA-2021:1983)	Nessus	Red Hat Local Security Checks	5/19/2021	11/7/2024	high
294342	MiracleLinux 7 : slapi-nis-0.56.5-4.el7 (AXSA:2021-1758:02)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
149761	CentOS 8 : idm:DL1 (CESA-2021:1983)	Nessus	CentOS Local Security Checks	5/19/2021	5/19/2021	high
149721	RHEL 8 : ipa (RHSA-2021:2027)	Nessus	Red Hat Local Security Checks	5/19/2021	11/7/2024	high
149725	RHEL 7 : slapi-nis (RHSA-2021:2032)	Nessus	Red Hat Local Security Checks	5/19/2021	11/7/2024	high
149790	Oracle Linux 7 : slapi-nis (ELSA-2021-2032)	Nessus	Oracle Linux Local Security Checks	5/20/2021	10/22/2024	high
149995	Oracle Linux 8 : idm:DL1 (ELSA-2021-1983)	Nessus	Oracle Linux Local Security Checks	5/27/2021	11/1/2024	high
153269	EulerOS 2.0 SP2 : slapi-nis (EulerOS-SA-2021-2448)	Nessus	Huawei Local Security Checks	9/14/2021	11/30/2023	high
157816	Rocky Linux 8 : idm:DL1 (RLSA-2021:1983)	Nessus	Rocky Linux Local Security Checks	2/9/2022	11/6/2023	high

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