CVSS3
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
Confidence
Low
EPSS
Percentile
19.5%
SSVC
Exploitation
none
Automatable
yes
Technical Impact
partial
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.
[
{
"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"
}
]
CVSS3
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
Confidence
Low
EPSS
Percentile
19.5%
SSVC
Exploitation
none
Automatable
yes
Technical Impact
partial