CVE-2019-12647

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
A vulnerability in the Ident protocol handler of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability exists because the affected software incorrectly handles memory structures, leading to a NULL pointer dereference. An attacker could exploit this vulnerability by opening a TCP connection to specific ports and sending traffic over that connection. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
Overview
  • CVE ID
  • CVE-2019-12647
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2019-09-25T20:15:10
  • Last Modified Date
  • 2019-10-09T23:45:57
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xe:fuji-16.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:fuji-16.8.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:1100:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4221:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4321:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4351:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4431:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4451-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_900:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-10sz-pd:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-12cz-a:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-12cz-d:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-12sz-im:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-24sz-im:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-24sz-m:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-24tz-m:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-4sz-a:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_920-4sz-d:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_4201:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_4202:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_4206:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:ncs_4216:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:network_convergence_system_520:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-identd-dos Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-12647
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12647
History
Created Old Value New Value Data Type Notes
2022-05-10 17:03:17 Added to TrackCVE
2022-12-04 03:10:15 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-04 03:10:15 2019-09-25T20:15Z 2019-09-25T20:15:10 CVE Published Date updated
2022-12-04 03:10:15 2019-10-09T23:45:57 CVE Modified Date updated
2022-12-04 03:10:15 Modified Vulnerability Status updated