PT-2019-3328 · Cisco · Cisco Ios Xe+1

Published 2019-09-25 · Updated 2019-10-09 · CVE-2019-12647

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS and IOS XE Software (affected versions not specified)

Description A vulnerability in the Ident protocol handler 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2019-03435

CVE-2019-12647

Affected Products

Cisco Ios

Cisco Ios Xe

References · 4

• https://osv.dev/vulnerability/CVE-2019-12647 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-03435 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-identd-dos · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-12647 · Security Note