Vulnerability Details : CVE-2020-3259
Used for ransomware!
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. An attacker could exploit this vulnerability by sending a crafted GET request to the web services interface. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information. Note: This vulnerability affects only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.
Vulnerability category: Information leak
Products affected by CVE-2020-3259
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.9 and before (<) 9.9.2.67cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.13 and before (<) 9.13.1.10cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.10 and before (<) 9.10.1.40cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.12 and before (<) 9.12.3.9cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.8 and before (<) 9.8.4.20cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
CVE-2020-3259 is in the CISA Known Exploited Vulnerabilities Catalog
This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
Cisco ASA and FTD Information Disclosure Vulnerability
CISA required action:
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA description:
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an information disclosure vulnerability. An attacker could retrieve memory contents on an affected device, which could lead to the disclosure of confidential information due to a buffer tracking issue when the softwar
Notes:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB; https://nvd.nist.gov/vuln/detail/CVE-2020-3259
Added on
2024-02-15
Action due date
2024-03-07
Exploit prediction scoring system (EPSS) score for CVE-2020-3259
2.71%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-3259
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
Cisco Systems, Inc. | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
N/A
|
N/A
|
Cisco:cisco-sa-asaftd-info-disclose-9eJtycMB | 2024-02-21 |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-3259
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2020-3259
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Information Disclosure VulnerabilityVendor Advisory
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