Test ID:	1.3.6.1.4.1.25623.1.1.12.2023.5822.2
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-5822-2)
Summary:	The remote host is missing an update for the 'samba' package(s) announced via the USN-5822-2 advisory.
Description:	Summary: The remote host is missing an update for the 'samba' package(s) announced via the USN-5822-2 advisory. Vulnerability Insight: USN-5822-1 fixed vulnerabilities in Samba. The update for Ubuntu 20.04 LTS introduced regressions in certain environments. Pending investigation of these regressions, this update temporarily reverts the security fixes. We apologize for the inconvenience. Original advisory details: It was discovered that Samba incorrectly handled the bad password count logic. A remote attacker could possibly use this issue to bypass bad passwords lockouts. This issue was only addressed in Ubuntu 22.10. (CVE-2021-20251) Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2022-3437) Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos keys. A remote attacker could possibly use this issue to elevate privileges. (CVE-2022-37966, CVE-2022-37967) It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure Channel. A remote attacker could possibly use this issue to elevate privileges. (CVE-2022-38023) Greg Hudson discovered that Samba incorrectly handled PAC parsing. On 32-bit systems, a remote attacker could use this issue to escalate privileges, or possibly execute arbitrary code. (CVE-2022-42898) Joseph Sutton discovered that Samba could be forced to issue rc4-hmac encrypted Kerberos tickets. A remote attacker could possibly use this issue to escalate privileges. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-45141) WARNING: The fixes included in these updates introduce several important behavior changes which may cause compatibility problems interacting with systems still expecting the former behavior. Please see the following upstream advisories for more information: [links moved to references] Affected Software/OS: 'samba' package(s) on Ubuntu 20.04. Solution: Please install the updated package(s). CVSS Score: 10.0 CVSS Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-20251 https://security.gentoo.org/glsa/202309-06 https://bugzilla.redhat.com/show_bug.cgi?id=1929800 https://bugzilla.samba.org/show_bug.cgi?id=14611 Common Vulnerability Exposure (CVE) ID: CVE-2022-3437 https://security.gentoo.org/glsa/202310-06 https://access.redhat.com/security/cve/CVE-2022-3437 https://bugzilla.redhat.com/show_bug.cgi?id=2137774 https://www.samba.org/samba/security/CVE-2022-3437.html https://lists.debian.org/debian-lts-announce/2024/04/msg00015.html http://www.openwall.com/lists/oss-security/2023/02/08/1 Common Vulnerability Exposure (CVE) ID: CVE-2022-37966 Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-37966 Common Vulnerability Exposure (CVE) ID: CVE-2022-37967 Windows Kerberos Elevation of Privilege Vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-37967 Common Vulnerability Exposure (CVE) ID: CVE-2022-38023 Netlogon RPC Elevation of Privilege Vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38023 Common Vulnerability Exposure (CVE) ID: CVE-2022-42898 https://bugzilla.samba.org/show_bug.cgi?id=15203 https://web.mit.edu/kerberos/advisories/ Common Vulnerability Exposure (CVE) ID: CVE-2022-45141 https://www.samba.org/samba/security/CVE-2022-45141.html
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