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[email protected]CVE-2020-3299

HistoryOct 21, 2020 - 7:15 p.m.

CVE-2020-3299

2020-10-2119:15:15

CWE-693

[email protected]

web.nvd.nist.gov

cisco

snort

vulnerability

bypass

remote attacker

file policy

http

nvd

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

6.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

36.3%

JSON

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured File Policy for HTTP. The vulnerability is due to incorrect detection of modified HTTP packets used in chunked responses. An attacker could exploit this vulnerability 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.

Affected configurations

NVD

Node

ciscofirepower_threat_defenseRange6.0.0–6.3.0.1

AND

ciscocloud_services_router_1000vMatch-

ciscoisrvMatch-

cisco1100-4pMatch-

cisco1100-8pMatch-

cisco1101-4pMatch-

cisco1109-2pMatch-

cisco1109-4pMatch-

cisco1111x-8pMatch-

cisco4221_integrated_services_routerMatch-

cisco4331_integrated_services_routerMatch-

cisco4431_integrated_services_routerMatch-

cisco4461_integrated_services_routerMatch-

ciscoisa_3000Match-

ciscomeraki_mxMatch-

Node

snortsnortRange<2.9.13.1

CPENameOperatorVersion
cisco:firepower_threat_defensecisco firepower threat defenselt6.3.0.1

CPE	Name	Operator	Version
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.3.0.1

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Firepower Threat Defense Software ",
    "versions": [
      {
        "version": "n/a",
        "status": "affected"
      }
    ]
  }
]