CVE-2019-12646

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
A vulnerability in the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper processing of transient SIP packets on which NAT is performed on an affected device. An attacker could exploit this vulnerability by using UDP port 5060 to send crafted SIP packets through an affected device that is performing NAT for SIP packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.
Overview
  • CVE ID
  • CVE-2019-12646
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2019-09-25T20:15:10
  • Last Modified Date
  • 2019-10-09T23:45:56
Weakness Enumerations
CWE URL
CWE-665 http://cwe.mitre.org/data/definitions/665.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xe:15.4\(3\)s:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:15.5\(3\)s:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:15.6\(1\)s:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.3.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.4.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.9.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:1100-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:1100-8p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:1101-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:1109-2p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:1109-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:1111x-8p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:encs_5100:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:encs_5400:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isrv:-:*:*:*:*:*:*:* 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-sip-alg Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-12646
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12646
History
Created Old Value New Value Data Type Notes
2022-05-10 17:03:17 Added to TrackCVE
2022-12-04 03:10:11 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-04 03:10:11 2019-09-25T20:15Z 2019-09-25T20:15:10 CVE Published Date updated
2022-12-04 03:10:11 2019-10-09T23:45:56 CVE Modified Date updated
2022-12-04 03:10:11 Modified Vulnerability Status updated