Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2022-20849 |
CWE-ID | CWE-20 |
Exploitation vector | Local network |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco IOS XR Operating systems & Components / Operating system Cisco ASR 9000 Series Aggregation Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco IOS XRv 9000 Router Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU67389
Risk: Low
CVSSv3.1: 5.3 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-20849
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 the affected application does not properly handle an error condition in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature. A remote attacker on the local network 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 XR: 6.8 - 7.5.0
Cisco ASR 9000 Series Aggregation Services Routers: All versions
Cisco IOS XRv 9000 Router: All versions
CPE2.3http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.