p PatchFirst

USN-5142-3

USN-5142-3 · samba regression

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes introduced a regression in Kerberos authentication in certain environments. Please see the following upstream bug for more information: https://bugzilla.samba.org/show_bug.cgi?id=14922 This update fixes the problem. Original advisory details: 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

Corrección disponible

Publicación
Actualización

Pila tecnológica: system

Productos y versiones afectados

  • samba Ubuntu:20.04:LTS

    Versiones
    • 2:4.10.7+dfsg-0ubuntu2
    • 2:4.10.7+dfsg-0ubuntu3
    • 2:4.11.1+dfsg-3ubuntu1
    • 2:4.11.1+dfsg-3ubuntu2
    • 2:4.11.1+dfsg-3ubuntu4
    • 2:4.11.5+dfsg-1ubuntu1
    • 2:4.11.5+dfsg-1ubuntu2
    • 2:4.11.6+dfsg-0ubuntu1
    • 2:4.11.6+dfsg-0ubuntu1.1
    • 2:4.11.6+dfsg-0ubuntu1.2
    • 2:4.11.6+dfsg-0ubuntu1.3
    • 2:4.11.6+dfsg-0ubuntu1.4
    • 2:4.11.6+dfsg-0ubuntu1.5
    • 2:4.11.6+dfsg-0ubuntu1.6
    • 2:4.11.6+dfsg-0ubuntu1.8
    • 2:4.11.6+dfsg-0ubuntu1.9
    • 2:4.11.6+dfsg-0ubuntu1.10
    • 2:4.13.14+dfsg-0ubuntu0.20.04.1
    • 2:4.13.14+dfsg-0ubuntu0.20.04.2
    • 2:4.13.14+dfsg-0ubuntu0.20.04.3
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2:4.13.14+dfsg-0ubuntu0.20.04.4

    Actualiza a 2:4.13.14+dfsg-0ubuntu0.20.04.4

Fuentes originales

Comprueba tu servidor →