NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Vulnerability (NS-SA-2019-0055)

Medium Nessus Plugin ID 127243

Synopsis

The remote machine is affected by a vulnerability.

Description

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel-rt packages installed that are affected by a vulnerability:

- A use-after-free flaw can occur in the Linux kernel due to a race condition between packet_do_bind() and packet_notifier() functions called for an AF_PACKET socket. An unprivileged, local user could use this flaw to induce kernel memory corruption on the system, leading to an unresponsive system or to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. (CVE-2018-18559)

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 kernel-rt 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-2019-0055

Plugin Details

Severity: Medium

ID: 127243

File Name: newstart_cgsl_NS-SA-2019-0055_kernel-rt.nasl

Version: 1.2

Type: local

Published: 2019/08/12

Updated: 2019/10/18

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2018-18559

CVSS v2.0

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.1

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

Temporal Vector: CVSS:3.0/E:U/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 Ease: No known exploits are available

Patch Publication Date: 2019/07/17

Vulnerability Publication Date: 2018/10/22

Reference Information

CVE: CVE-2018-18559