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cve[email protected]CVE-2020-3555
HistoryOct 21, 2020 - 7:15 p.m.

CVE-2020-3555

2020-10-2119:15:17
CWE-404
web.nvd.nist.gov
32
cisco
asa
ftd
vulnerability
sip
dos
cve-2020-3555
nvd
security

7.8 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.002 Low

EPSS

Percentile

52.7%

A vulnerability in the SIP inspection process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a crash and reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a watchdog timeout and crash during the cleanup of threads that are associated with a SIP connection that is being deleted from the connection list. An attacker could exploit this vulnerability by sending a high rate of crafted SIP traffic through an affected device. A successful exploit could allow the attacker to cause a watchdog timeout and crash, resulting in a crash and reload of the affected device.

Affected configurations

NVD
Node
ciscoadaptive_security_applianceRange<9.6.4.43
OR
ciscofirepower_threat_defenseRange6.2.2
OR
ciscofirepower_threat_defenseRange6.3.06.3.0.6
OR
ciscofirepower_threat_defenseRange6.4.06.4.0.10
OR
ciscofirepower_threat_defenseRange6.5.06.5.0.5
OR
ciscofirepower_threat_defenseMatch6.6.0
OR
ciscoadaptive_security_appliance_softwareRange9.7.09.8.4.24
OR
ciscoadaptive_security_appliance_softwareRange9.9.09.9.2.80
OR
ciscoadaptive_security_appliance_softwareRange9.10.09.10.1.43
OR
ciscoadaptive_security_appliance_softwareRange9.12.09.12.4.2
OR
ciscoadaptive_security_appliance_softwareRange9.13.09.13.1.13
OR
ciscoadaptive_security_appliance_softwareRange9.14.09.14.1.19

CNA Affected

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

7.8 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.002 Low

EPSS

Percentile

52.7%

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