Cisco IOS XE Software Vulnerability Could Lead to Device Reload or Denial of Service

CVE-2024-20309

5.6MEDIUM

Key Information

Vendor
Cisco
Status
Cisco iOS Xe Software
Vendor
CVE Published:
27 March 2024

Badges

๐Ÿ‘พ Exploit Exists

Summary

A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding.

This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition.

Affected Version(s)

Cisco IOS XE Software = 3.7.0S

Cisco IOS XE Software = 3.7.1S

Cisco IOS XE Software = 3.7.2S

References

CVSS V3.1

Score:
5.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • ๐Ÿ‘พ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database
.