ArubaOS-CX < 10.3.0001 (ARUBA-PSA-2020-010)

high Nessus Plugin ID 150074
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

An application installed on the remote host is affected by multiple vulnerabilities.

Description

The version of ArubaOS-CX installed on the remote host is prior to version 10.3.0001. It is, therefore, affected by multiple vulnerabilities, as follows:

- Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. (CVE-2019-11477)

- Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. (CVE-2019-11478)

- Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. (CVE-2019-11479)

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

Solution

Upgrade to ArubaOS-CX version 10.3.0001 or later.

See Also

https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt

Plugin Details

Severity: High

ID: 150074

File Name: arubaos-cx_aruba-psa-2020-010.nasl

Version: 1.3

Type: combined

Family: Misc.

Published: 5/31/2021

Updated: 7/1/2021

Dependencies: arubaos_installed.nbin

Risk Information

CVSS Score Source: CVE-2019-11477

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:arubanetworks:arubaos, cpe:/o:hp:arubaos, x-cpe:/o:arubanetworks:arubaos-cx

Required KB Items: installed_sw/ArubaOS

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2020

Vulnerability Publication Date: 9/15/2020

Reference Information

CVE: CVE-2019-11477, CVE-2019-11478, CVE-2019-11479