Vulnerability Details : CVE-2022-20946
A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to a memory handling error that occurs when GRE traffic is processed. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to cause the device to restart, resulting in a DoS condition.
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-gre-dos-hmedHQPM ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-gre-dos-hmedHQPM"]
This advisory is part of the November 2022 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication.
Vulnerability category: OverflowMemory CorruptionDenial of service
Products affected by CVE-2022-20946
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.7.0 and up to, including, (<=) 6.7.0.3cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.5.0 and up to, including, (<=) 6.5.0.5cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.6.0 and up to, including, (<=) 6.6.5.2cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.4.0 and up to, including, (<=) 6.4.0.15cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 7.0.0 and up to, including, (<=) 7.0.3cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.3.0 and up to, including, (<=) 6.3.0.5cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-20946
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-20946
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
Cisco Systems, Inc. |
CWE ids for CVE-2022-20946
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A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: ykramarz@cisco.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-20946
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-gre-dos-hmedHQPM
Cisco Firepower Threat Defense Software Generic Routing Encapsulation Denial of Service VulnerabilityPatch;Vendor Advisory
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https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-gre-dos-hmedHQPM
Cisco Firepower Threat Defense Software Generic Routing Encapsulation Denial of Service Vulnerability
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