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.

The remote Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-2c77cee4b5 advisory.

    Fixes:

    * Delay service starts until after network is online (rhbz#2005501)
    * Restart services on package update (will apply when updating from this release)


    ----

    This release fixes the following Security Vulnerabilities:

    * CVE-2022-42898 PAC parse integer overflows
    * CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour
    * CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of array
    * CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors
    * CVE-2021-3671 A null pointer de-reference when handling missing sname in TGS-REQ
    * CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec

    Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0 on the Common Vulnerability Scoring     System (CVSS) v3.


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

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 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 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)

  - A flaw was found in Samba. Some SMB1 write requests were not correctly range-checked to ensure the client     had sent enough data to fulfill the write, allowing server memory contents to be written into the file (or     printer) instead of client-supplied data. The client cannot control the area of the server memory written     to the file (or printer). (CVE-2022-32742)

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 SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2023:0020-1 advisory.

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue,     where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be     opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by     forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute     delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD     DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the     not-delegated flag set. (CVE-2019-14870)

  - 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)

  - Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a     preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept. (CVE-2021-44758)

  - A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and     unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI     library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a     maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the     application, possibly resulting in a denial of service (DoS) attack. (CVE-2022-3437)

  - Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a     denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via     PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users     should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue. (CVE-2022-41916)

  - PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that     may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit     platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other     platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has a similar bug.
    (CVE-2022-42898)

  - Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the     ASN.1 codec used by the Key Distribution Center (KDC). (CVE-2022-44640)

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

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2023:0019-1 advisory.

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue,     where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be     opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by     forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute     delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD     DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the     not-delegated flag set. (CVE-2019-14870)

  - 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)

  - Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a     preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept. (CVE-2021-44758)

  - A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and     unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI     library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a     maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the     application, possibly resulting in a denial of service (DoS) attack. (CVE-2022-3437)

  - Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a     denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via     PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users     should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue. (CVE-2022-41916)

  - PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that     may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit     platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other     platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has a similar bug.
    (CVE-2022-42898)

  - Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the     ASN.1 codec used by the Key Distribution Center (KDC). (CVE-2022-44640)

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 Fedora 35 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-cbbd105d08 advisory.

    Fixes:

    * Delay service starts until after network is online (rhbz#2005501)
    * Restart services on package update (will apply when updating from this release)


    ----

    This release fixes the following Security Vulnerabilities:

    * CVE-2022-42898 PAC parse integer overflows
    * CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour
    * CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of array
    * CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors
    * CVE-2021-3671 A null pointer de-reference when handling missing sname in TGS-REQ
    * CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec

    Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0 on the Common Vulnerability Scoring     System (CVSS) v3.



Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-dba9ba8e2b advisory.

    Fixes:

    * Delay service starts until after network is online (rhbz#2005501)
    * Restart services on package update (will apply when updating from this release)


    ----

    This release fixes the following Security Vulnerabilities:

    * CVE-2022-42898 PAC parse integer overflows
    * CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour
    * CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of array
    * CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors
    * CVE-2021-3671 A null pointer de-reference when handling missing sname in TGS-REQ
    * CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec

    Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0 on the Common Vulnerability Scoring     System (CVSS) v3.


Tenable has extracted the preceding description block directly from the Fedora 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 Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3206 advisory.

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue,     where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be     opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by     forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute     delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD     DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the     not-delegated flag set. (CVE-2019-14870)

  - 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)

  - Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a     denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via     PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users     should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue. (CVE-2022-41916)

  - The vulnerability exists due to a boundary error within the GSSAPI unwrap_des() and unwrap_des3() routines     of Heimdal. A remote user can send specially crafted data to the application, trigger a heap-based buffer     overflow and perform a denial of service (DoS) attack. (CVE-2022-3437)

  - The Kerberos libraries used by Samba provide a mechanism for authenticating a user or service by means of     tickets that can contain Privilege Attribute Certificates (PACs). Both the Heimdal and MIT Kerberos     libraries, and so the embedded Heimdal shipped by Samba suffer from an integer multiplication overflow     when calculating how many bytes to allocate for a buffer for the parsed PAC. On a 32-bit system an     overflow allows placement of 16-byte chunks of entirely attacker- controlled data. (Because the user's     control over this calculation is limited to an unsigned 32-bit value, 64-bit systems are not impacted).
    The server most vulnerable is the KDC, as it will parse an attacker-controlled PAC in the S4U2Proxy     handler. The secondary risk is to Kerberos-enabled file server installations in a non-AD realm. A non-AD     Heimdal KDC controlling such a realm may pass on an attacker-controlled PAC within the service ticket.
    (CVE-2022-42898)

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

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5287 advisory.

  - 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)

  - Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a     preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept. (CVE-2021-44758)

  - A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and     unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI     library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a     maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the     application, possibly resulting in a denial of service (DoS) attack. (CVE-2022-3437)

  - Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a     denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via     PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users     should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue. (CVE-2022-41916)

  - PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that     may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit     platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other     platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has a similar bug.
    (CVE-2022-42898)

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

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5675-1 advisory.

    Isaac Boukris and Andrew Bartlett discovered that Heimdal's KDC was not properly performing checksum     algorithm verifications in the S4U2Self extension module. An attacker could possibly use this issue to     perform a machine-in-the-middle attack and request S4U2Self tickets for any user known by the application.
    This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2018-16860)

    It was discovered that Heimdal was not properly handling the verification of key exchanges when an     anonymous PKINIT was being used. An attacker could possibly use this issue to perform a machine-in-the-     middle attack and expose sensitive information. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04     ESM and Ubuntu 18.04 LTS. (CVE-2019-12098)

    Joseph Sutton discovered that Heimdal was not properly handling memory management operations when dealing     with TGS-REQ tickets that were missing information. An attacker could possibly use this issue to cause a     denial of service. (CVE-2021-3671)

    Micha Kpie discovered that Heimdal was not properly handling logical conditions that related to     memory management operations. An attacker could possibly use this issue to cause a denial of service.
    (CVE-2022-3116)

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

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 flaw was found in the way samba, as an Active Directory Domain Controller, is able to support an RODC     (read-only domain controller). This would allow an RODC to print administrator tickets. (CVE-2020-25718)

  - A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-     based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did     not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total     domain compromise. (CVE-2020-25719)

  - Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now     provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
    (CVE-2020-25721)

  - Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored     data. An attacker could use this flaw to cause total domain compromise. (CVE-2020-25722)

  - 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)

  - In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections     via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb     database. However while the database was correctly shared, the user credentials state was only pointed at,     and when one connection within that association group ended, the database would be left pointing at an     invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-     after-free could instead allow different user state to be pointed at and this might allow more privileged     access. (CVE-2021-3738)

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.

According to the versions of the samba packages installed, the EulerOS 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)

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.

According to the versions of the samba packages installed, the EulerOS 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 flaw was found in the way samba, as an Active Directory Domain Controller, is able to support an RODC     (read-only domain controller). This would allow an RODC to print administrator tickets. (CVE-2020-25718)

  - A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-     based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did     not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total     domain compromise. (CVE-2020-25719)

  - Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored     data. An attacker could use this flaw to cause total domain compromise. (CVE-2020-25722)

  - 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)

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.

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

  - 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)

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 Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5174-1 advisory.

    Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client connections. A remote attacker     could possibly use this issue to downgrade connections to plaintext authentication. (CVE-2016-2124)

    Andrew Bartlett discovered that Samba incorrectly mapping domain users to local users. An authenticated     attacker could possibly use this issue to become root on domain members. (CVE-2020-25717)

    Andrew Bartlett discovered that Samba did not properly check sensitive attributes. An authenticated     attacker could possibly use this issue to escalate privileges. (CVE-2020-25722)

    Joseph Sutton discovered that Samba incorrectly handled certain TGS requests. An authenticated attacker     could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2021-3671)

    The fix for CVE-2020-25717 results in possible behaviour changes that could affect certain environments.
    Please see the upstream advisory for more information:

    https://www.samba.org/samba/security/CVE-2020-25717.html

Tenable has extracted the preceding description block directly from the Ubuntu 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 Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5142-1 advisory.

    Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client connections. A remote attacker     could possibly use this issue to downgrade connections to plaintext authentication. (CVE-2016-2124)

    Andrew Bartlett discovered that Samba incorrectly mapping domain users to local users. An authenticated     attacker could possibly use this issue to become root on domain members. (CVE-2020-25717)

    Andrew Bartlett discovered that Samba did not correctly sandbox Kerberos tickets issues by an RODC. An     RODC could print administrator tickets, contrary to expectations. (CVE-2020-25718)

    Andrew Bartlett discovered that Samba incorrectly handled Kerberos tickets. Delegated administrators could     possibly use this issue to impersonate accounts, leading to total domain compromise. (CVE-2020-25719)

    Andrew Bartlett discovered that Samba did not provide stable AD identifiers to Kerberos acceptors.
    (CVE-2020-25721)

    Andrew Bartlett discovered that Samba did not properly check sensitive attributes. An authenticated     attacker could possibly use this issue to escalate privileges. (CVE-2020-25722)

    Stefan Metzmacher discovered that Samba incorrectly handled certain large DCE/RPC requests. A remote     attacker could possibly use this issue to bypass signature requirements. (CVE-2021-23192)

    William Ross discovered that Samba incorrectly handled memory. A remote attacker could use this issue to     cause Samba to crash, resulting in a denial of service, or possibly escalate privileges. (CVE-2021-3738)

    Joseph Sutton discovered that Samba incorrectly handled certain TGS requests. An authenticated attacker     could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2021-3671)

    The fix for CVE-2020-25717 results in possible behaviour changes that could affect certain environments.
    Please see the upstream advisory for more information:

    https://www.samba.org/samba/security/CVE-2020-25717.html

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

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

ID	Name	Product	Family	Severity
211098	Fedora 37 : heimdal (2022-2c77cee4b5)	Nessus	Fedora Local Security Checks	critical
170834	EulerOS Virtualization 3.0.2.2 : samba (EulerOS-SA-2023-1293)	Nessus	Huawei Local Security Checks	high
170098	openSUSE 15 Security Update : libheimdal (openSUSE-SU-2023:0020-1)	Nessus	SuSE Local Security Checks	critical
170095	openSUSE 15 Security Update : libheimdal (openSUSE-SU-2023:0019-1)	Nessus	SuSE Local Security Checks	critical
169613	EulerOS Virtualization 3.0.2.6 : samba (EulerOS-SA-2023-1063)	Nessus	Huawei Local Security Checks	high
169244	Fedora 35 : heimdal (2022-cbbd105d08)	Nessus	Fedora Local Security Checks	critical
169051	Fedora 36 : heimdal (2022-dba9ba8e2b)	Nessus	Fedora Local Security Checks	critical
168205	Debian DLA-3206-1 : heimdal - LTS security update	Nessus	Debian Local Security Checks	critical
168145	Debian DSA-5287-1 : heimdal - security update	Nessus	Debian Local Security Checks	critical
166109	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Heimdal vulnerabilities (USN-5675-1)	Nessus	Ubuntu Local Security Checks	high
165891	EulerOS Virtualization 3.0.6.6 : samba (EulerOS-SA-2022-2537)	Nessus	Huawei Local Security Checks	high
160685	EulerOS Virtualization 3.0.2.0 : samba (EulerOS-SA-2022-1675)	Nessus	Huawei Local Security Checks	high
159873	EulerOS Virtualization 2.10.1 : samba (EulerOS-SA-2022-1387)	Nessus	Huawei Local Security Checks	high
159868	EulerOS Virtualization 2.10.0 : samba (EulerOS-SA-2022-1413)	Nessus	Huawei Local Security Checks	high
158490	EulerOS 2.0 SP5 : samba (EulerOS-SA-2022-1282)	Nessus	Huawei Local Security Checks	high
158380	EulerOS 2.0 SP10 : samba (EulerOS-SA-2022-1246)	Nessus	Huawei Local Security Checks	high
158375	EulerOS 2.0 SP10 : samba (EulerOS-SA-2022-1258)	Nessus	Huawei Local Security Checks	high
158278	EulerOS 2.0 SP3 : samba (EulerOS-SA-2022-1188)	Nessus	Huawei Local Security Checks	medium
157219	EulerOS 2.0 SP9 : samba (EulerOS-SA-2022-1017)	Nessus	Huawei Local Security Checks	medium
157210	EulerOS 2.0 SP9 : samba (EulerOS-SA-2022-1037)	Nessus	Huawei Local Security Checks	medium
155936	Ubuntu 18.04 LTS : Samba vulnerabilities (USN-5174-1)	Nessus	Ubuntu Local Security Checks	high
155297	Ubuntu 20.04 LTS : Samba vulnerabilities (USN-5142-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2021-3671

medium

Tenable Plugins

critical

high

critical

critical

high

critical

critical

critical

critical

high

high

high

high

high

high

high

high

medium

medium

medium

high

high