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cve[email protected]CVE-2020-3231
HistoryJun 03, 2020 - 6:15 p.m.

CVE-2020-3231

2020-06-0318:15:21
CWE-284
CWE-863
web.nvd.nist.gov
31
cisco
switches
vulnerability
802.1x
authentication
broadcast traffic
cve-2020-3231
nvd

4.7 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

4.7 Medium

AI Score

Confidence

High

2.9 Low

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

25.0%

A vulnerability in the 802.1X feature of Cisco Catalyst 2960-L Series Switches and Cisco Catalyst CDB-8P Switches could allow an unauthenticated, adjacent attacker to forward broadcast traffic before being authenticated on the port. The vulnerability exists because broadcast traffic that is received on the 802.1X-enabled port is mishandled. An attacker could exploit this vulnerability by sending broadcast traffic on the port before being authenticated. A successful exploit could allow the attacker to send and receive broadcast traffic on the 802.1X-enabled port before authentication.

Affected configurations

NVD
Node
ciscoiosMatch15.2\(5\)e2
OR
ciscoiosMatch15.2\(5\)ex
OR
ciscoiosMatch15.2\(5a\)e
OR
ciscoiosMatch15.2\(5b\)e
OR
ciscoiosMatch15.2\(5c\)e
OR
ciscoiosMatch15.2\(6\)e
OR
ciscoiosMatch15.2\(6\)e0c
OR
ciscoiosMatch15.2\(6\)e1
OR
ciscoiosMatch15.2\(6\)e1a
OR
ciscoiosMatch15.2\(6\)e1s
OR
ciscoiosMatch15.2\(6\)e2
OR
ciscoiosMatch15.2\(6\)e2b
OR
ciscoiosMatch15.2\(6\)e3
OR
ciscoiosMatch15.2\(6\)e4
OR
ciscoiosMatch15.2\(7\)e
OR
ciscoiosMatch15.2\(7\)e0a
OR
ciscoiosMatch15.2\(7\)e0b
OR
ciscoiosMatch15.2\(7\)e0s
OR
ciscoiosMatch15.2\(7a\)e0b
OR
ciscoiosMatch15.2\(7b\)e0b
OR
ciscoiosMatch15.3\(3\)jaa1
OR
ciscoiosMatch15.3\(3\)jpj

CNA Affected

[
  {
    "product": "Cisco IOS 15.2(5a)E",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

4.7 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

4.7 Medium

AI Score

Confidence

High

2.9 Low

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

25.0%

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