Denial of service in Cisco IOS and IOS XE Software
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-20697 |
| CWE-ID | CWE-691 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco IOS Operating systems & Components / Operating system Cisco IOS XE Operating systems & Components / Operating system |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Insufficient Control Flow Management
EUVDB-ID: #VU62352
Risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-20697
CWE-ID:
CWE-691 - Insufficient Control Flow Management
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper resource management in the HTTP server code. A remote attacker can send specially crafted HTTP requests and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS: 15.9(03.00c)M02 - 15.9(03.00S)GB01
Cisco IOS XE: 15.9(03.00c)M02 - 15.9(03.00S)GB01
External linkshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-dos-svOdkdBS
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.
