CVE-2024-1975 SIG(0) can be used to exhaust CPU resources

2024-07-2314:38:57

isc

github.com

cve-2024-1975

bind 9

dnssec.

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.8

Confidence

Low

EPSS

0.001

Percentile

19.5%

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

If a server hosts a zone containing a “KEY” Resource Record, or a resolver DNSSEC-validates a “KEY” Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests.
This issue affects BIND 9 versions 9.0.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.49-S1, and 9.18.11-S1 through 9.18.27-S1.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:isc:bind:9.0:*:*:*:*:*:*:*",
      "cpe:2.3:a:isc:bind:9.16.0:*:*:*:*:*:*:*",
      "cpe:2.3:a:isc:bind:9.16.8:s1:*:*:*:*:*:*",
      "cpe:2.3:a:isc:bind:9.18.0:*:*:*:-:*:*:*",
      "cpe:2.3:a:isc:bind:9.18.11:s1:*:*:supported_preview:*:*:*",
      "cpe:2.3:a:isc:bind:9.19.0:*:*:*:-:*:*:*",
      "cpe:2.3:a:isc:bind:9.9.3:s1:*:*:*:*:*:*"
    ],
    "vendor": "isc",
    "product": "bind",
    "versions": [
      {
        "status": "affected",
        "version": "9.0",
        "versionType": "custom",
        "lessThanOrEqual": "9.11.37"
      },
      {
        "status": "affected",
        "version": "9.16.0",
        "versionType": "custom",
        "lessThanOrEqual": "9.16.50"
      },
      {
        "status": "affected",
        "version": "9.16.8",
        "versionType": "custom",
        "lessThanOrEqual": "9.16.49-s1"
      },
      {
        "status": "affected",
        "version": "9.18.0",
        "versionType": "custom",
        "lessThanOrEqual": "9.18.27"
      },
      {
        "status": "affected",
        "version": "9.18.11",
        "versionType": "custom",
        "lessThanOrEqual": "9.18.27-s1"
      },
      {
        "status": "affected",
        "version": "9.19.0",
        "versionType": "custom",
        "lessThanOrEqual": "9.19.24"
      },
      {
        "status": "affected",
        "version": "9.9.3",
        "versionType": "custom",
        "lessThanOrEqual": "9.11.37-s1"
      }
    ],
    "defaultStatus": "unaffected"
  }
]