CVE-2024-1975
Published: 23 July 2024
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.
Notes
| Author | Note |
|---|---|
| alexmurray |
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs |
| mdeslaur |
in focal and jammy, isc-dhcp uses the bind9-libs package This is unlikely to affect isc-dhcp's use of bind9-libs and the vendored bind9 libs, marking as negligible |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
bind9
Launchpad, Ubuntu, Debian |
bionic |
Released
(1:9.11.3+dfsg-1ubuntu1.19+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(1:9.18.28-0ubuntu0.20.04.1)
|
|
| jammy |
Released
(1:9.18.28-0ubuntu0.22.04.1)
|
|
| noble |
Released
(1:9.18.28-0ubuntu0.24.04.1)
|
|
| trusty |
Needs triage
|
|
| upstream |
Released
(9.18.28)
|
|
| xenial |
Released
(1:9.10.3.dfsg.P4-8ubuntu1.19+esm9)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
bind9-libs
Launchpad, Ubuntu, Debian |
focal |
Needs triage
|
| jammy |
Needs triage
|
|
| noble |
Does not exist
|
|
| upstream |
Needs triage
|
|
|
isc-dhcp
Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Not vulnerable
(code not present)
|
|
| jammy |
Not vulnerable
(code not present)
|
|
| noble |
Needs triage
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not present)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |