A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer

CVE-2020-8618

4.9MEDIUM

Key Information

Vendor
Isc
Status
Bind9
Vendor
CVE Published:
17 June 2020

Summary

An attacker who is permitted to send zone data to a server via zone transfer can exploit this to intentionally trigger the assertion failure with a specially constructed zone, denying service to clients.

Affected Version(s)

BIND9 9.16.0 -> 9.16.3

References

https://kb.isc.org/docs/cve-2020-8618
x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-20200625-0003/
x_refsource_CONFIRM
https://usn.ubuntu.com/4399-1/
vendor-advisoryx_refsource_UBUNTU

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database
.