Detections
Analytics

Cisco Adaptive Security Appliance Layer 2 Filtering Bypass (cisco-sa-20190501-asa-ftd-bypass)

medium Nessus Plugin ID 137234

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Adaptive Security Appliance (ASA) Software is affected by a vulnerability in the detection engine due to improper filtering of Ethernet frames. An unauthenticated, adjacent attacker can exploit this, by sending crafted packets to the management interface of an affected device, in order to bypass the Layer 2 (L2) filters and send data directly to the kernel.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvm75358

See Also

http://www.nessus.org/u?5f0a37bb

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvm75358

Plugin Details

Severity: Medium

ID: 137234

File Name: cisco-sa-20190501-asa-bypass.nasl

Version: 1.4

Type: local

Family: CISCO

Published: 6/8/2020

Updated: 6/10/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2019-1695

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/a:cisco:adaptive_security_appliance_software

Required KB Items: Host/Cisco/ASA

Exploit Ease: No known exploits are available

Patch Publication Date: 5/1/2019

Vulnerability Publication Date: 5/1/2019

Reference Information

CVE: CVE-2019-1695