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[email protected]CVE-2020-3529

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

CVE-2020-3529

2020-10-2119:15:16

CWE-400

[email protected]

web.nvd.nist.gov

cve-2020-3529

cisco

asa

ftd

ssl vpn

dos

vulnerability

nvd

security

dma

memory management

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.5 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

52.7%

JSON

A vulnerability in the SSL VPN negotiation process for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to inefficient direct memory access (DMA) memory management during the negotiation phase of an SSL VPN connection. An attacker could exploit this vulnerability by sending a steady stream of crafted Datagram TLS (DTLS) traffic to an affected device. A successful exploit could allow the attacker to exhaust DMA memory on the device and cause a DoS condition.

Affected configurations

NVD

Node

ciscoadaptive_security_applianceRange<9.6.4.45

ciscofirepower_threat_defenseRange<6.3.0.6

ciscofirepower_threat_defenseRange6.4.0–6.4.0.10

ciscofirepower_threat_defenseRange6.5.0–6.5.0.5

ciscofirepower_threat_defenseRange6.6.0–6.6.1

ciscoadaptive_security_appliance_softwareRange9.8.0–9.8.4.29

ciscoadaptive_security_appliance_softwareRange9.9.0–9.9.2.80

ciscoadaptive_security_appliance_softwareRange9.10.0–9.10.1.44

ciscoadaptive_security_appliance_softwareRange9.12.0–9.12.4.4

ciscoadaptive_security_appliance_softwareRange9.13.0–9.13.1.13

ciscoadaptive_security_appliance_softwareRange9.14.0–9.14.1.30

CPENameOperatorVersion
cisco:adaptive_security_appliancecisco adaptive security appliancelt9.6.4.45
cisco:firepower_threat_defensecisco firepower threat defenselt6.3.0.6
cisco:firepower_threat_defensecisco firepower threat defenselt6.4.0.10
cisco:firepower_threat_defensecisco firepower threat defenselt6.5.0.5
cisco:firepower_threat_defensecisco firepower threat defenselt6.6.1
cisco:adaptive_security_appliance_softwarecisco adaptive security appliance softwarelt9.8.4.29
cisco:adaptive_security_appliance_softwarecisco adaptive security appliance softwarelt9.9.2.80
cisco:adaptive_security_appliance_softwarecisco adaptive security appliance softwarelt9.10.1.44
cisco:adaptive_security_appliance_softwarecisco adaptive security appliance softwarelt9.12.4.4
cisco:adaptive_security_appliance_softwarecisco adaptive security appliance softwarelt9.13.1.13

CPE	Name	Operator	Version
cisco:adaptive_security_appliance	cisco adaptive security appliance	lt	9.6.4.45
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.3.0.6
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.4.0.10
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.5.0.5
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.6.1
cisco:adaptive_security_appliance_software	cisco adaptive security appliance software	lt	9.8.4.29
cisco:adaptive_security_appliance_software	cisco adaptive security appliance software	lt	9.9.2.80
cisco:adaptive_security_appliance_software	cisco adaptive security appliance software	lt	9.10.1.44
cisco:adaptive_security_appliance_software	cisco adaptive security appliance software	lt	9.12.4.4
cisco:adaptive_security_appliance_software	cisco adaptive security appliance software	lt	9.13.1.13

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CNA Affected

[
  {
    "product": "Cisco Adaptive Security Appliance (ASA) Software ",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.5 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

52.7%

JSON

Related for CVE-2020-3529

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