Vulnerability identifier: #VU16927

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0282

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS/IOS XE
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists in the TCP socket code due to a state condition between the socket state and the transmission control block (TCB) state. A remote attacker can send specific HTTP requests at a sustained rate to a reachable IP address of the affected software and cause the affected device to reload, resulting in a denial of service (DoS) condition on an affected device.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco IOS/IOS XE: 15.2.2 E4

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-tcp

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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.