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[email protected]CVE-2018-0241

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

CVE-2018-0241

2018-04-1920:29:00

CWE-399

[email protected]

web.nvd.nist.gov

cve-2018-0241

cisco

ios xr

software

vulnerability

udp

broadcast forwarding

dos

denial of service

nvd

6.1 Medium

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

7.4 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

39.5%

JSON

A vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of UDP broadcast packets that are forwarded to an IPv4 helper address. An attacker could exploit this vulnerability by sending multiple UDP broadcast packets to the affected device. An exploit could allow the attacker to cause a buffer leak on the affected device, eventually resulting in a DoS condition requiring manual intervention to recover. This vulnerability affects all Cisco IOS XR platforms running 6.3.1, 6.2.3, or earlier releases of Cisco IOS XR Software when at least one IPv4 helper address is configured on an interface of the device. Cisco Bug IDs: CSCvi35625.

Affected configurations

NVD

Node

ciscoasr_9001Match-

ciscoasr_9006Match-

ciscoasr_9010Match-

ciscoasr_9904Match-

ciscoasr_9906Match-

ciscoasr_9910Match-

ciscoasr_9912Match-

ciscoasr_9922Match-

AND

ciscoios_xrMatch4.0.4.base

ciscoios_xrMatch4.1.3.base

ciscoios_xrMatch4.2.4.base

ciscoios_xrMatch4.3.4.base

ciscoios_xrMatch4.4.3.ce

ciscoios_xrMatch5.0.3.ce

ciscoios_xrMatch5.1.4.base

ciscoios_xrMatch5.2.5.ce

ciscoios_xrMatch5.3.4.base

ciscoios_xrMatch5.4.3.ce

ciscoios_xrMatch6.0.4.base

ciscoios_xrMatch6.1.4.base

ciscoios_xrMatch6.2.3.base

CPENameOperatorVersion
cisco:ios_xrcisco ios xreq4.0.4.base
cisco:ios_xrcisco ios xreq4.1.3.base
cisco:ios_xrcisco ios xreq4.2.4.base
cisco:ios_xrcisco ios xreq4.3.4.base
cisco:ios_xrcisco ios xreq4.4.3.ce
cisco:ios_xrcisco ios xreq5.0.3.ce
cisco:ios_xrcisco ios xreq5.1.4.base
cisco:ios_xrcisco ios xreq5.2.5.ce
cisco:ios_xrcisco ios xreq5.3.4.base
cisco:ios_xrcisco ios xreq5.4.3.ce

CPE	Name	Operator	Version
cisco:ios_xr	cisco ios xr	eq	4.0.4.base
cisco:ios_xr	cisco ios xr	eq	4.1.3.base
cisco:ios_xr	cisco ios xr	eq	4.2.4.base
cisco:ios_xr	cisco ios xr	eq	4.3.4.base
cisco:ios_xr	cisco ios xr	eq	4.4.3.ce
cisco:ios_xr	cisco ios xr	eq	5.0.3.ce
cisco:ios_xr	cisco ios xr	eq	5.1.4.base
cisco:ios_xr	cisco ios xr	eq	5.2.5.ce
cisco:ios_xr	cisco ios xr	eq	5.3.4.base
cisco:ios_xr	cisco ios xr	eq	5.4.3.ce

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CNA Affected

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

References

www.securityfocus.com/bid/103929

www.securitytracker.com/id/1040710

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

6.1 Medium

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

7.4 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

39.5%

JSON

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