PT-2020-2690 · Cisco · Cisco Ios Xe+1

Published 2020-06-03 · Updated 2021-09-17 · CVE-2020-3226

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 Software and Cisco IOS XE Software (affected versions not specified)

Description A vulnerability in the Session Initiation Protocol (SIP) library could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.

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

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-02758

CVE-2020-3226

Affected Products

Cisco Ios

Cisco Ios Xe

References · 7

• https://bdu.fstec.ru/vul/2020-02758 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sip-Cv28sQw2 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/653705 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-3226 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sip-Cv28sQw2 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3226 · Vendor Advisory
• https://t.me/cvenotify/4147 · Telegram Post