NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2022-0001)

high Nessus Plugin ID 160776

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

The remote NewStart CGSL host, running version MAIN 4.05, has kernel packages installed that are affected by multiple vulnerabilities:

- The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation. (CVE-2017-12192)

- The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c. (CVE-2017-2647)

- A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

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

Solution

Upgrade the vulnerable CGSL kernel packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

See Also

http://security.gd-linux.com/notice/NS-SA-2022-0001

http://security.gd-linux.com/info/CVE-2017-12192

http://security.gd-linux.com/info/CVE-2017-2647

http://security.gd-linux.com/info/CVE-2020-10711

Plugin Details

Severity: High

ID: 160776

File Name: newstart_cgsl_NS-SA-2022-0001_kernel.nasl

Version: 1.2

Type: local

Published: 5/9/2022

Updated: 5/9/2022

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2017-2647

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_main:kernel, p-cpe:/a:zte:cgsl_main:kernel-debuginfo, p-cpe:/a:zte:cgsl_main:kernel-debuginfo-common-x86_64, p-cpe:/a:zte:cgsl_main:kernel-devel, p-cpe:/a:zte:cgsl_main:kernel-headers, p-cpe:/a:zte:cgsl_main:perf, p-cpe:/a:zte:cgsl_main:perf-debuginfo, p-cpe:/a:zte:cgsl_main:python-perf, p-cpe:/a:zte:cgsl_main:python-perf-debuginfo, cpe:/o:zte:cgsl_main:4

Required KB Items: Host/local_checks_enabled, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 5/7/2022

Vulnerability Publication Date: 3/20/2017

Reference Information

CVE: CVE-2017-2647, CVE-2017-12192, CVE-2020-10711