PT-2021-2577 · Cisco · Cisco Ios Xe Sd-Wan+1

James Spadaro Iii · Published 2021-03-24 · Updated 2021-03-29 · CVE-2021-1431

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

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

Description A vulnerability in the vDaemon process could allow an unauthenticated, remote attacker to cause a device to reload, resulting in a denial of service (DoS) condition. This issue is due to insufficient handling of malformed packets. An attacker could exploit this vulnerability by sending crafted traffic to an affected device, causing the device to reload and resulting in a DoS 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:2021-02041

CVE-2021-1431

Affected Products

Cisco Ios Xe Sd-Wan

Cisco Ios Xe

References · 6

• https://safe-surf.ru/specialists/bulletins-nkcki/663956 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwdos-4zeEeC9w · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1431 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwdos-4zeEeC9w · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1431 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02041 · Security Note