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[email protected]CVE-2022-20943

HistoryNov 15, 2022 - 9:15 p.m.

CVE-2022-20943

2022-11-1521:15:35

CWE-244

[email protected]

web.nvd.nist.gov

cisco

snort

smb2

vulnerabilities

bypass

denial of service

dos

nvd

cve-2022-20943

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.0%

JSON

Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device.

These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition.

Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details [“#details”] section of this advisory for more information.

Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected.

Affected configurations

NVD

Node

ciscofirepower_threat_defenseMatch7.0.0

ciscofirepower_threat_defenseMatch7.0.0.1

ciscofirepower_threat_defenseMatch7.0.1

ciscofirepower_threat_defenseMatch7.0.1.1

Node

ciscocyber_visionMatch3.0.0

ciscocyber_visionMatch3.0.1

ciscocyber_visionMatch3.0.2

ciscocyber_visionMatch3.0.3

ciscocyber_visionMatch3.0.5

ciscocyber_visionMatch3.0.6

ciscocyber_visionMatch3.1.0

ciscocyber_visionMatch3.1.1

ciscocyber_visionMatch3.1.2

ciscocyber_visionMatch3.2.0

ciscocyber_visionMatch3.2.1

ciscocyber_visionMatch3.2.2

ciscocyber_visionMatch3.2.3

ciscocyber_visionMatch3.2.4

ciscocyber_visionMatch4.0.0

ciscocyber_visionMatch4.0.1

ciscocyber_visionMatch4.0.2

ciscocyber_visionMatch4.0.3

ciscocyber_visionMatch4.1.0

ciscocyber_visionMatch4.1.1

Node

ciscomeraki_mx_security_appliance_firmwareRange<16.6.7

ciscomeraki_mx_security_appliance_firmwareRange17.0–17.11.1

ciscomeraki_mx_security_appliance_firmwareRange18.0–18.1.3

CPENameOperatorVersion
cisco:firepower_threat_defensecisco firepower threat defenseeq7.0.0
cisco:firepower_threat_defensecisco firepower threat defenseeq7.0.0.1
cisco:firepower_threat_defensecisco firepower threat defenseeq7.0.1
cisco:firepower_threat_defensecisco firepower threat defenseeq7.0.1.1

CPE	Name	Operator	Version
cisco:firepower_threat_defense	cisco firepower threat defense	eq	7.0.0
cisco:firepower_threat_defense	cisco firepower threat defense	eq	7.0.0.1
cisco:firepower_threat_defense	cisco firepower threat defense	eq	7.0.1
cisco:firepower_threat_defense	cisco firepower threat defense	eq	7.0.1.1

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Firepower Threat Defense Software",
    "versions": [
      {
        "version": "7.0.0",
        "status": "affected"
      },
      {
        "version": "7.0.0.1",
        "status": "affected"
      },
      {
        "version": "7.0.1",
        "status": "affected"
      },
      {
        "version": "7.0.1.1",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Cisco",
    "product": "Cisco Cyber Vision",
    "versions": [
      {
        "version": "3.0.4",
        "status": "affected"
      },
      {
        "version": "3.0.0",
        "status": "affected"
      },
      {
        "version": "3.0.1",
        "status": "affected"
      },
      {
        "version": "3.0.2",
        "status": "affected"
      },
      {
        "version": "3.0.3",
        "status": "affected"
      },
      {
        "version": "3.0.5",
        "status": "affected"
      },
      {
        "version": "3.0.6",
        "status": "affected"
      },
      {
        "version": "3.1.0",
        "status": "affected"
      },
      {
        "version": "3.1.2",
        "status": "affected"
      },
      {
        "version": "3.1.1",
        "status": "affected"
      },
      {
        "version": "3.2.3",
        "status": "affected"
      },
      {
        "version": "3.2.1",
        "status": "affected"
      },
      {
        "version": "3.2.4",
        "status": "affected"
      },
      {
        "version": "3.2.0",
        "status": "affected"
      },
      {
        "version": "3.2.2",
        "status": "affected"
      },
      {
        "version": "4.0.0",
        "status": "affected"
      },
      {
        "version": "4.0.1",
        "status": "affected"
      },
      {
        "version": "4.0.2",
        "status": "affected"
      },
      {
        "version": "4.0.3",
        "status": "affected"
      },
      {
        "version": "4.1.0",
        "status": "affected"
      },
      {
        "version": "4.1.1",
        "status": "affected"
      }
    ]
  }
]

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr

Social References

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.0%

JSON

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