Denial of service in Cisco IOS XE Software
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-20679 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Cisco IOS XE Operating systems & Components / Operating system Cisco 1000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc 4221 Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc 4321 Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc 4331 Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc 4351 Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 8200 Series Edge Platforms Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 8300 Series Edge Platforms Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Input validation error
EUVDB-ID: #VU62338
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-20679
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the IPSec decryption routine. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: All versions
Cisco 1000 Series Integrated Services Routers: All versions
4221 Integrated Services Routers: All versions
4321 Integrated Services Routers: All versions
4331 Integrated Services Routers: All versions
4351 Integrated Services Routers: All versions
Catalyst 8200 Series Edge Platforms: All versions
Catalyst 8300 Series Edge Platforms: All versions
CPE2.3- cpe:2.3:o:cisco_systems:cisco_ios_xe:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_1000_series_integrated_services_routers:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:4221_integrated_services_routers:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:4321_integrated_services_routers:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:4331_integrated_services_routers:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:4351_integrated_services_routers:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_8200_series_edge_platforms:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_8300_series_edge_platforms:*:*:*:*:*:*:*:*
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qfp-ipsec-GQmqvtqV
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
