Detections
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Cisco Adaptive Security Appliance (ASA) Software FTP Inspection Bypass Vulnerability (cisco-sa-asaftd-ftpbypass-HY3UTxYu)
medium Nessus Plugin ID 164350
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Synopsis
The remote device is missing a vendor-supplied security patch (cisco-sa-asaftd-ftpbypass-HY3UTxYu)Description
According to its self-reported version number, there is a vulnerability in the FTP inspection engine of Cisco Adaptive Security Appliance (ASA) Software that could allow an unauthenticated, remote attacker to bypass FTP inspection. The vulnerability is due to ineffective flow tracking of FTP traffic. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and successfully complete FTP connections.Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvt13445See Also
Plugin Details
Severity: Medium
ID: 164350
File Name: cisco-sa-asaftd-ftpbypass-HY3UTxYu-asa.nasl
Version: 1.7
Type: combined
Family: CISCO
Published: 8/23/2022
Updated: 3/31/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2020-3564
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:adaptive_security_appliance_software
Exploit Ease: No known exploits are available
Patch Publication Date: 10/21/2020
Vulnerability Publication Date: 10/21/2020
Reference Information
CVE: CVE-2020-3564