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CiscoCVE-2018-0243

HistoryApr 19, 2018 - 8:29 p.m.

CVE-2018-0243

2018-04-1920:29:00

CWE-693

cisco

web.nvd.nist.gov

cisco

firepower

system software

vulnerability

smb2

smb3

file action policy

cve-2018-0243

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

CVSS3

5.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.7

Confidence

High

EPSS

0.001

Percentile

40.1%

JSON

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured file action policy that is intended to drop the Server Message Block Version 2 (SMB2) and SMB Version 3 (SMB3) protocols if malware is detected. The vulnerability is due to incorrect detection of an SMB2 or SMB3 file based on the total file length. An attacker could exploit this vulnerability by sending a crafted SMB2 or SMB3 transfer request through the targeted device. An exploit could allow the attacker to pass SMB2 or SMB3 files that could be malware even though the device is configured to block them. This vulnerability does not exist for SMB Version 1 (SMB1) files. This vulnerability affects Cisco Firepower System Software when one or more file action policies are configured, on software releases prior to 6.2.3. Cisco Bug IDs: CSCvg68807.

Affected configurations

Nvd

Node

ciscofirepower_threat_defenseRange<6.2.3

VendorProductVersionCPE
ciscofirepower_threat_defense*cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	firepower_threat_defense	*	cpe:2.3:a:cisco:firepower_threat_defense::::::::

CNA Affected

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

References

www.securityfocus.com/bid/103943

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-fss

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

CVSS3

5.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.7

Confidence

High

EPSS

0.001

Percentile

40.1%

JSON

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