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EulerOS Virtualization 2.11.1 : samba (EulerOS-SA-2023-2076)

critical Nessus Plugin ID 176833

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

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 samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met. (CVE-2021-20251)

 - 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)

 - Netlogon RPC Elevation of Privilege Vulnerability (CVE-2022-38023)

 - 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)

 - Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts- hmac-sha1-96). (CVE-2022-45141)

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.

Solution

Update the affected samba packages.

See Also

http://www.nessus.org/u?52c3cd42

Plugin Details

Severity: Critical

ID: 176833

File Name: EulerOS_SA-2023-2076.nasl

Version: 1.0

Type: local

Published: 6/7/2023

Updated: 6/7/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-45141

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:samba-common, p-cpe:/a:huawei:euleros:samba-libs, p-cpe:/a:huawei:euleros:samba-winbind, p-cpe:/a:huawei:euleros:libsmbclient, cpe:/o:huawei:euleros:uvp:2.11.1, p-cpe:/a:huawei:euleros:libwbclient, p-cpe:/a:huawei:euleros:samba-common-tools, p-cpe:/a:huawei:euleros:samba-winbind-clients, p-cpe:/a:huawei:euleros:samba, p-cpe:/a:huawei:euleros:samba-winbind-modules, p-cpe:/a:huawei:euleros:samba-client

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/6/2023

Vulnerability Publication Date: 10/25/2022

Reference Information

CVE: CVE-2021-20251, CVE-2022-3437, CVE-2022-38023, CVE-2022-42898, CVE-2022-45141

IAVA: 2022-A-0447-S, 2022-A-0495-S, 2023-A-0004-S