Cisco Integrated Services Routers 1000/4000 Series HTTP Detection Engine File Policy Bypass (cisco-sa-snort-filepolbypass-67DEwMe2)

high Nessus Plugin ID 146202
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

The remote device is missing a vendor-supplied security patch.

Description

According to its version and configuration, the Cisco Software running on the remote Integrated Services Router device is affected by affected by a file policy bypass vulnerability due to the incorrect handling of a HTTP range header. An unauthenticated, remote attacker could send a carefully crafted malicious payload to the device bypass file policy configurations

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvu18635

See Also

http://www.nessus.org/u?ac01012e

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu18635

Plugin Details

Severity: High

ID: 146202

File Name: cisco-sa-snort-filepolbypass-isr-isa-isrv-67DEwMe2.nasl

Version: 1.8

Type: combined

Family: CISCO

Published: 2/4/2021

Updated: 7/29/2021

Dependencies: cisco_ios_xe_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2021-1223

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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:H/A:N

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

Vulnerability Information

Required KB Items: Host/Cisco/IOS-XE/Version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 1/13/2021

Vulnerability Publication Date: 1/13/2021

Reference Information

CVE: CVE-2021-1223

CISCO-BUG-ID: CSCvu18635

CISCO-SA: cisco-sa-snort-filepolbypass-67DEwMe2

IAVA: 2021-A-0027-S

CWE: 284