NewStart CGSL CORE 5.04 / MAIN 5.04 : samba Multiple Vulnerabilities (NS-SA-2021-0024)
critical Nessus Plugin ID 147360
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Synopsis
The remote machine is affected by multiple vulnerabilities.Description
The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has samba packages installed that are affected by multiple vulnerabilities:- All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with log level = 3 (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange.
In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless). (CVE-2019-14907)
- An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC), aka 'Netlogon Elevation of Privilege Vulnerability'. (CVE-2020-1472)
- A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service. (CVE-2020-14323)
- A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker. (CVE-2020-14318)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade the vulnerable CGSL samba packages. Note that updated packages may not be available yet. Please contact ZTE for more information.See Also
Plugin Details
Severity: Critical
ID: 147360
File Name: newstart_cgsl_NS-SA-2021-0024_samba.nasl
Version: 1.3
Type: local
Published: 3/10/2021
Updated: 3/11/2021
Dependencies: ssh_get_info.nasl
Risk Information
CVSS Score Source: CVE-2020-1472
VPR
Risk Factor: Critical
Score: 10
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 8.1
Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Temporal Vector: E:H/RL:OF/RC:C
CVSS v3
Risk Factor: Critical
Base Score: 10
Temporal Score: 9.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: E:H/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/9/2021
Vulnerability Publication Date: 1/21/2020
Reference Information
CVE: CVE-2019-14907, CVE-2020-1472, CVE-2020-14318, CVE-2020-14323