Detections
Analytics
Cisco Firepower Threat Defense Software IP Fragment Memory Leak (cisco-sa-asaftd-frag-memleak-mCtqdP9n)
high Nessus Plugin ID 149852
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Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a vulnerability in the IP fragment-handling implementation. This allows an unauthenticated, remote attacker to cause a memory leak on an affected device. This memory leak could prevent traffic from being processed through the device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper error handling when specific failures occur during IP fragment reassembly. An attacker could exploit this vulnerability by sending crafted, fragmented IP traffic to a targeted device. A successful exploit could allow the attacker to continuously consume memory on the affected device and eventually impact traffic, resulting in a DoS condition. The device could require a manual reboot to recover from the DoS condition. Note: This vulnerability applies to both IP Version 4 (IPv4) and IP Version 6 (IPv6) traffic.Note that Nessus has not tested for this issue 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 CSCvu47925See Also
http://www.nessus.org/u?e9d5e6d6
http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74302
Plugin Details
Severity: High
ID: 149852
File Name: cisco-sa-asaftd-frag-memleak-mCtqdP9n.nasl
Version: 1.4
Type: combined
Family: CISCO
Published: 5/24/2021
Updated: 3/31/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2020-3373
CVSS v3
Risk Factor: High
Base Score: 8.6
Temporal Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:cisco:firepower_threat_defense, cpe:/o:cisco:firepower_threat_defense
Required KB Items: installed_sw/Cisco Firepower Threat Defense
Exploit Ease: No known exploits are available
Patch Publication Date: 10/21/2020
Vulnerability Publication Date: 10/21/2020
Reference Information
CVE: CVE-2020-3373