CVE-2020-8619 A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer

2020-06-1721:20:13

isc

www.cve.org

CVSS3

4.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

AI Score

5.3

Confidence

High

EPSS

0.003

Percentile

69.9%

JSON

In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (“*”) character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.

CNA Affected

[
  {
    "product": "BIND9",
    "vendor": "ISC",
    "versions": [
      {
        "status": "affected",
        "version": "9.11.14 through versions before 9.11.20"
      },
      {
        "status": "affected",
        "version": "9.16.0 through versions before 9.16.4"
      },
      {
        "status": "affected",
        "version": "9.11.14-S1 through versions before 9.11.20-S1"
      },
      {
        "status": "affected",
        "version": "9.14.9 through versions 9.14.12"
      }
    ]
  }
]