Detections
Analytics

Oracle Linux 8 : samba (ELSA-2020-1878)

critical Nessus Plugin ID 180910

Language:

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-1878 advisory.

 - A flaw was found in samba versions 4.9.x up to 4.9.13, samba 4.10.x up to 4.10.8 and samba 4.11.x up to 4.11.0rc3, when certain parameters were set in the samba configuration file. An unauthenticated attacker could use this flaw to escape the shared directory and access the contents of directories outside the share. (CVE-2019-10197)

 - A flaw was found in the samba client, all samba versions before samba 4.11.2, 4.10.10 and 4.9.15, where a malicious server can supply a pathname to the client with separators. This could allow the client to access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to create files outside of the current working directory using the privileges of the client user.
 (CVE-2019-10218)

 - 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)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2020-1878.html

Plugin Details

Severity: Critical

ID: 180910

File Name: oraclelinux_ELSA-2020-1878.nasl

Version: 1.0

Type: local

Agent: unix

Published: 9/7/2023

Updated: 9/7/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2019-10197

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:ctdb, p-cpe:/a:oracle:linux:ctdb-tests, p-cpe:/a:oracle:linux:libsmbclient, p-cpe:/a:oracle:linux:libsmbclient-devel, p-cpe:/a:oracle:linux:libwbclient, p-cpe:/a:oracle:linux:libwbclient-devel, p-cpe:/a:oracle:linux:openchange, p-cpe:/a:oracle:linux:python3-samba, p-cpe:/a:oracle:linux:python3-samba-test, p-cpe:/a:oracle:linux:samba, p-cpe:/a:oracle:linux:samba-client, p-cpe:/a:oracle:linux:samba-client-libs, p-cpe:/a:oracle:linux:samba-common, p-cpe:/a:oracle:linux:samba-common-libs, p-cpe:/a:oracle:linux:samba-common-tools, p-cpe:/a:oracle:linux:samba-krb5-printing, p-cpe:/a:oracle:linux:samba-libs, p-cpe:/a:oracle:linux:samba-pidl, p-cpe:/a:oracle:linux:samba-test, p-cpe:/a:oracle:linux:samba-test-libs, p-cpe:/a:oracle:linux:samba-winbind, p-cpe:/a:oracle:linux:samba-winbind-clients, p-cpe:/a:oracle:linux:samba-winbind-krb5-locator, p-cpe:/a:oracle:linux:samba-winbind-modules

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 5/5/2020

Vulnerability Publication Date: 9/3/2019

Reference Information

CVE: CVE-2019-10197, CVE-2019-10218, CVE-2019-14907

IAVA: 2019-A-0318-S, 2019-A-0407-S, 2020-A-0035-S