The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-5082 advisory.

    - related: rhbz#2021171 - Fix CVE-2020-25717
    - related: rhbz#2021171 - Fix CVE-2020-25717

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

Note that Nessus has not tested for these issues 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 multiple vulnerabilities as referenced in the RHSA-2021:5192 advisory.

  - A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to     retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
    (CVE-2016-2124)

  - A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use     this flaw to cause possible privilege escalation. (CVE-2020-25717)

Note that Nessus has not tested for these issues 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 multiple vulnerabilities as referenced in the RHSA-2022:0008 advisory.

    Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common     Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and     various information.

    Security Fix(es):

    * samba: Active Directory (AD) domain user could become root on domain members (CVE-2020-25717)

    * samba: SMB1 client connections can be downgraded to plaintext authentication (CVE-2016-2124)

    * samba: Subsequent DCE/RPC fragment injection vulnerability (CVE-2021-23192)

    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 these issues but has instead relied only on the application's self-reported version number.

The version of samba installed on the remote host is prior to 4.10.16-18.59. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2022-1564 advisory.

    A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to     retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
    (CVE-2016-2124)

    A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use     this flaw to cause possible privilege escalation. (CVE-2020-25717)

    A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix     group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end     of the array in the case where a negative cache entry had been added to the mapping cache. This could     cause the calling code to return those values into the process token that stores the group membership for     a user. The highest threat from this vulnerability is to data confidentiality and integrity.
    (CVE-2021-20254)

    Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution (CVE-2021-44142)

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

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

The remote NewStart CGSL host, running version MAIN 6.02, has samba packages installed that are affected by multiple vulnerabilities:

  - A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to     retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
    (CVE-2016-2124)

  - A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use     this flaw to cause possible privilege escalation. (CVE-2020-25717)

  - A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix     group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end     of the array in the case where a negative cache entry had been added to the mapping cache. This could     cause the calling code to return those values into the process token that stores the group membership for     a user. The highest threat from this vulnerability is to data confidentiality and integrity.
    (CVE-2021-20254)

  - A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large     DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data,     bypassing the signature requirements. (CVE-2021-23192)

  - All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to     allow a directory to be created in an area of the server file system not exported under the share     definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack     to succeed. (CVE-2021-43566)

  - The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide ...enhanced compatibility     with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver. Samba versions prior to     4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via     specially crafted extended file attributes. A remote attacker with write access to extended file     attributes can execute arbitrary code with the privileges of smbd, typically root. (CVE-2021-44142)

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

According to the versions of the samba packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to     retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
    (CVE-2016-2124)

  - A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use     this flaw to cause possible privilege escalation. (CVE-2020-25717)

  - A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ     (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
    (CVE-2021-3671)

  - The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide '...enhanced compatibility     with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver.' Samba versions prior to     4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via     specially crafted extended file attributes. A remote attacker with write access to extended file     attributes can execute arbitrary code with the privileges of smbd, typically root. (CVE-2021-44142)

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 NewStart CGSL host, running version MAIN 6.06, has samba packages installed that are affected by multiple vulnerabilities:

  - The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide ...enhanced compatibility     with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver. Samba versions prior to     4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via     specially crafted extended file attributes. A remote attacker with write access to extended file     attributes can execute arbitrary code with the privileges of smbd, typically root. (CVE-2021-44142)

  - Logic error in the SID/Name translation functionality in smbd in Samba 3.0.23d through 3.0.25pre2 allows     local users to gain temporary privileges and execute SMB/CIFS protocol operations via unspecified vectors     that cause the daemon to transition to the root user. (CVE-2007-2444)

  - Samba 3.2.0 uses weak permissions (0666) for the (1) group_mapping.tdb and (2) group_mapping.ldb files,     which allows local users to modify the membership of Unix groups. (CVE-2008-3789)

  - smbd in Samba 3.0.29 through 3.2.4 might allow remote attackers to read arbitrary memory and cause a     denial of service via crafted (1) trans, (2) trans2, and (3) nttrans requests, related to a cut&paste     error that causes an improper bounds check to be performed. (CVE-2008-4314)

  - smbd in Samba 3.3.11, 3.4.6, and 3.5.0, when libcap support is enabled, runs with the CAP_DAC_OVERRIDE     capability, which allows remote authenticated users to bypass intended file permissions via standard     filesystem operations with any client. (CVE-2010-0728)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
156045	Oracle Linux 8 : samba (ELSA-2021-5082)	Nessus	Oracle Linux Local Security Checks	2021/12/14	2024/11/1	high
156241	CentOS 7 : samba (RHSA-2021:5192)	Nessus	CentOS Local Security Checks	2021/12/21	2024/10/9	high
156464	RHEL 8 : samba (RHSA-2022:0008)	Nessus	Red Hat Local Security Checks	2022/1/4	2024/11/7	high
158192	Amazon Linux AMI : samba (ALAS-2022-1564)	Nessus	Amazon Linux Local Security Checks	2022/2/19	2024/12/11	high
167474	NewStart CGSL MAIN 6.02 : samba Multiple Vulnerabilities (NS-SA-2022-0099)	Nessus	NewStart CGSL Local Security Checks	2022/11/15	2023/2/3	high
169613	EulerOS Virtualization 3.0.2.6 : samba (EulerOS-SA-2023-1063)	Nessus	Huawei Local Security Checks	2023/1/6	2023/2/3	high
266281	NewStart CGSL MAIN 6.06 : samba Multiple Vulnerabilities (NS-SA-2025-0208)	Nessus	NewStart CGSL Local Security Checks	2025/9/30	2025/9/30	high

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