Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass (cisco-sa-http-fp-bp-KfDdcQhc)

medium Nessus Plugin ID 150058

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XE is affected by a vulnerability in the Snort detection engine due to a flaw in the handling of HTTP header parameters. An unauthenticated, remote attacker can exploit this by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco Advisory

Plugin Details

Severity: Medium

ID: 150058

File Name: cisco-sa-http-fp-bp-KfDdcQhc.nasl

Version: 1.7

Type: combined

Family: CISCO

Published: 5/28/2021

Updated: 11/18/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-1495

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.1

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

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

CVSS Score Source: CVE-2021-1494

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/28/2021

Vulnerability Publication Date: 4/28/2021

Reference Information

CVE: CVE-2021-1494, CVE-2021-1495

CWE: 668, 693

CISCO-SA: cisco-sa-http-fp-bp-KfDdcQhc

IAVA: 2021-A-0249

CISCO-BUG-ID: CSCvv70864, CSCvw19272, CSCvw26645, CSCvw59055

Detections

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