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Use of Out-of-range Pointer Offset

CVE-2021-1352

High
7.4/10

Summary

A vulnerability in the DECnet Phase IV and DECnet/OSI protocol processing of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of DECnet traffic that is received by an affected device. An attacker could exploit this vulnerability by sending DECnet traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

  • LOW
  • ADJACENT_NETWORK
  • NONE
  • CHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-823 - Use of Out-of-range Pointer Offset

The program performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.

References

Advisory Timeline

  • Published