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CiscoCVE-2018-0239

HistoryApr 19, 2018 - 8:29 p.m.

CVE-2018-0239

2018-04-1920:29:00

CWE-770

CWE-20

cisco

web.nvd.nist.gov

cisco

staros

cisco asr

vulnerability

denial of service

cve-2018-0239

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.002

Percentile

61.9%

JSON

A vulnerability in the egress packet processing functionality of the Cisco StarOS operating system for Cisco Aggregation Services Router (ASR) 5700 Series devices and Virtualized Packet Core (VPC) System Software could allow an unauthenticated, remote attacker to cause an interface on the device to cease forwarding packets. The device may need to be manually reloaded to clear this Interface Forwarding Denial of Service condition. The vulnerability is due to the failure to properly check that the length of a packet to transmit does not exceed the maximum supported length of the network interface card (NIC). An attacker could exploit this vulnerability by sending a crafted IP packet or a series of crafted IP fragments through an interface on the targeted device. A successful exploit could allow the attacker to cause the network interface to cease forwarding packets. This vulnerability could be triggered by either IPv4 or IPv6 network traffic. This vulnerability affects the following Cisco products when they are running the StarOS operating system and a virtual interface card is installed on the device: Aggregation Services Router (ASR) 5700 Series, Virtualized Packet Core-Distributed Instance (VPC-DI) System Software, Virtualized Packet Core-Single Instance (VPC-SI) System Software. Cisco Bug IDs: CSCvf32385.

Affected configurations

Nvd

Node

ciscostarosMatch21.0.v0.65819

ciscostarosMatch21.0.v4

ciscostarosMatch21.1.v6

ciscostarosMatch21.3.1

ciscostarosMatch21.4.0

AND

ciscoasr_5700Match-

VendorProductVersionCPE
ciscostaros21.0.v0.65819cpe:2.3:o:cisco:staros:21.0.v0.65819:*:*:*:*:*:*:*
ciscostaros21.0.v4cpe:2.3:o:cisco:staros:21.0.v4:*:*:*:*:*:*:*
ciscostaros21.1.v6cpe:2.3:o:cisco:staros:21.1.v6:*:*:*:*:*:*:*
ciscostaros21.3.1cpe:2.3:o:cisco:staros:21.3.1:*:*:*:*:*:*:*
ciscostaros21.4.0cpe:2.3:o:cisco:staros:21.4.0:*:*:*:*:*:*:*
ciscoasr_5700-cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	staros	21.0.v0.65819	cpe:2.3:o:cisco:staros:21.0.v0.65819:::::::*
cisco	staros	21.0.v4	cpe:2.3:o:cisco:staros:21.0.v4:::::::*
cisco	staros	21.1.v6	cpe:2.3:o:cisco:staros:21.1.v6:::::::*
cisco	staros	21.3.1	cpe:2.3:o:cisco:staros:21.3.1:::::::*
cisco	staros	21.4.0	cpe:2.3:o:cisco:staros:21.4.0:::::::*
cisco	asr_5700	-	cpe:2.3:h:cisco:asr_5700:-:::::::*

CNA Affected

[
  {
    "product": "Cisco StarOS",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Cisco StarOS"
      }
    ]
  }
]

References

www.securityfocus.com/bid/103923

www.securitytracker.com/id/1040720

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-staros

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.002

Percentile

61.9%

JSON

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