Test ID:	1.3.6.1.4.1.25623.1.0.845156
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-5142-2)
Summary:	The remote host is missing an update for the 'samba' package(s) announced via the USN-5142-2 advisory.
Description:	Summary: The remote host is missing an update for the 'samba' package(s) announced via the USN-5142-2 advisory. Vulnerability Insight: USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes introduced regressions in name mapping and backups. Please see the following upstream bugs for more information: [links moved to references] 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: [link moved to references] Affected Software/OS: 'samba' package(s) on Ubuntu 20.04, Ubuntu 21.04, Ubuntu 21.10. Solution: Please install the updated package(s). CVSS Score: 9.0 CVSS Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2016-2124 https://security.gentoo.org/glsa/202309-06 https://bugzilla.redhat.com/show_bug.cgi?id=2019660 https://www.samba.org/samba/security/CVE-2016-2124.html https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html Common Vulnerability Exposure (CVE) ID: CVE-2020-25717 https://bugzilla.redhat.com/show_bug.cgi?id=2019672 https://www.samba.org/samba/security/CVE-2020-25717.html Common Vulnerability Exposure (CVE) ID: CVE-2020-25718 https://bugzilla.redhat.com/show_bug.cgi?id=2019726 https://www.samba.org/samba/security/CVE-2020-25718.html Common Vulnerability Exposure (CVE) ID: CVE-2020-25719 https://bugzilla.redhat.com/show_bug.cgi?id=2019732 https://www.samba.org/samba/security/CVE-2020-25719.html Common Vulnerability Exposure (CVE) ID: CVE-2020-25721 https://bugzilla.redhat.com/show_bug.cgi?id=2021728 https://bugzilla.samba.org/show_bug.cgi?id=14725 https://www.samba.org/samba/security/CVE-2020-25721.html Common Vulnerability Exposure (CVE) ID: CVE-2020-25722 https://bugzilla.redhat.com/show_bug.cgi?id=2019764 https://www.samba.org/samba/security/CVE-2020-25722.html Common Vulnerability Exposure (CVE) ID: CVE-2021-23192 https://bugzilla.redhat.com/show_bug.cgi?id=2019666 https://ubuntu.com/security/CVE-2021-23192 https://www.samba.org/samba/security/CVE-2021-23192.html Common Vulnerability Exposure (CVE) ID: CVE-2021-3671 Debian Security Information: DSA-5287 (Google Search) https://www.debian.org/security/2022/dsa-5287 https://bugzilla.redhat.com/show_bug.cgi?id=2013080, https://bugzilla.samba.org/show_bug.cgi?id=14770, https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html Common Vulnerability Exposure (CVE) ID: CVE-2021-3738 https://bugzilla.redhat.com/show_bug.cgi?id=2021726 https://bugzilla.samba.org/show_bug.cgi?id=14468 https://www.samba.org/samba/security/CVE-2021-3738.html
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