CVE-2023-20213

Summary

A vulnerability in the CDP processing feature of Cisco ISE could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of the CDP process on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes CDP traffic. An attacker could exploit this vulnerability by sending crafted CDP traffic to the device. A successful exploit could cause the CDP process to crash, impacting neighbor discovery and the ability of Cisco ISE to determine the reachability of remote devices. After a crash, the CDP process must be manually restarted using the cdp enable command in interface configuration mode.

Affected Software

VendorProductVersion RangeStatus
CiscoCisco Identity Services Engine Software2.6.0affected
CiscoCisco Identity Services Engine Software2.6.0 p1affected
CiscoCisco Identity Services Engine Software2.6.0 p2affected
CiscoCisco Identity Services Engine Software2.6.0 p3affected
CiscoCisco Identity Services Engine Software2.6.0 p5affected
CiscoCisco Identity Services Engine Software2.6.0 p6affected
CiscoCisco Identity Services Engine Software2.6.0 p7affected
CiscoCisco Identity Services Engine Software2.6.0 p8affected
CiscoCisco Identity Services Engine Software2.6.0 p9affected
CiscoCisco Identity Services Engine Software2.6.0 p10affected
CiscoCisco Identity Services Engine Software2.6.0 p11affected
CiscoCisco Identity Services Engine Software2.6.0 p12affected
CiscoCisco Identity Services Engine Software2.7.0affected
CiscoCisco Identity Services Engine Software2.7.0 p1affected
CiscoCisco Identity Services Engine Software2.7.0 p2affected
CiscoCisco Identity Services Engine Software2.7.0 p3affected
CiscoCisco Identity Services Engine Software2.7.0 p4affected
CiscoCisco Identity Services Engine Software2.7.0 p5affected
CiscoCisco Identity Services Engine Software2.7.0 p6affected
CiscoCisco Identity Services Engine Software2.7.0 p7affected
CiscoCisco Identity Services Engine Software2.7.0 p9affected
CiscoCisco Identity Services Engine Software3.0.0affected
CiscoCisco Identity Services Engine Software3.0.0 p1affected
CiscoCisco Identity Services Engine Software3.0.0 p2affected
CiscoCisco Identity Services Engine Software3.0.0 p3affected
CiscoCisco Identity Services Engine Software3.0.0 p4affected
CiscoCisco Identity Services Engine Software3.0.0 p5affected
CiscoCisco Identity Services Engine Software3.0.0 p6affected
CiscoCisco Identity Services Engine Software3.1.0affected
CiscoCisco Identity Services Engine Software3.1.0 p1affected
CiscoCisco Identity Services Engine Software3.1.0 p3affected
CiscoCisco Identity Services Engine Software3.1.0 p4affected
CiscoCisco Identity Services Engine Software3.1.0 p5affected
CiscoCisco Identity Services Engine Software3.1.0 p7affected
CiscoCisco Identity Services Engine Software3.2.0affected
CiscoCisco Identity Services Engine Software3.2.0 p1affected

Weaknesses

  • CWE-787: Out-of-bounds Write

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References