CVE-2020-3555
CVSS V2 High 7.8
CVSS V3 High 7.5
Description
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.
Overview
- CVE ID
- CVE-2020-3555
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-10-21T19:15:17
- Last Modified Date
- 2020-10-27T15:19:04
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.6.4.43 | |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.7.0 | 9.8.4.24 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.9.0 | 9.9.2.80 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.10.0 | 9.10.1.43 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.12.0 | 9.12.4.2 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.13.0 | 9.13.1.13 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.14.0 | 9.14.1.19 |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.2.2 | |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.3.0 | 6.3.0.6 |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.4.0 | 6.4.0.10 |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.5.0 | 6.5.0.5 |
| cpe:2.3:a:cisco:firepower_threat_defense:6.6.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.8
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sipdos-3DGvdjvg | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-3555 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3555 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:22:02 | Added to TrackCVE | |||
| 2022-12-05 00:46:48 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 00:46:48 | 2020-10-21T19:15Z | 2020-10-21T19:15:17 | CVE Published Date | updated |
| 2022-12-05 00:46:48 | 2020-10-27T15:19:04 | CVE Modified Date | updated | |
| 2022-12-05 00:46:48 | Analyzed | Vulnerability Status | updated |