CVE-2019-15989

CVSS V2 Medium 5 CVSS V3 High 8.6
Description
A vulnerability in the implementation of the Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains a specific BGP attribute. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer or would need to be injected by the attacker into the victim’s BGP network on an existing, valid TCP connection to a BGP peer.
Overview
  • CVE ID
  • CVE-2019-15989
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-01-26T05:15:13
  • Last Modified Date
  • 2020-01-29T19:46:44
Weakness Enumerations
CWE URL
CWE-754 http://cwe.mitre.org/data/definitions/754.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:crs:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:* 0 OR
cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 8.6
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-bgp-dos Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-15989
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15989
History
Created Old Value New Value Data Type Notes
2022-05-10 16:52:07 Added to TrackCVE
2022-12-04 10:07:23 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-04 10:07:23 2020-01-26T05:15Z 2020-01-26T05:15:13 CVE Published Date updated
2022-12-04 10:07:23 2020-01-29T19:46:44 CVE Modified Date updated
2022-12-04 10:07:23 Analyzed Vulnerability Status updated