CVE-2022-38177
Published: 21 September 2022
By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
Notes
Author | Note |
---|---|
alexmurray | As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs |
mdeslaur | affects 9.8.4 -> 9.16.32 |
Priority
Status
Package | Release | Status |
---|---|---|
bind9 Launchpad, Ubuntu, Debian |
kinetic |
Not vulnerable
(1:9.18.4-2ubuntu1)
|
trusty |
Released
(1:9.9.5.dfsg-3ubuntu0.19+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
xenial |
Released
(1:9.10.3.dfsg.P4-8ubuntu1.19+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
jammy |
Not vulnerable
(1:9.18.1-1ubuntu1.1)
|
|
upstream |
Needs triage
|
|
bionic |
Released
(1:9.11.3+dfsg-1ubuntu1.18)
|
|
focal |
Released
(1:9.16.1-0ubuntu2.11)
|
|
isc-dhcp Launchpad, Ubuntu, Debian |
kinetic |
Not vulnerable
(code not compiled)
|
trusty |
Not vulnerable
(code not present)
|
|
xenial |
Not vulnerable
(code not present)
|
|
bionic |
Not vulnerable
(code not present)
|
|
focal |
Not vulnerable
(code not present)
|
|
jammy |
Not vulnerable
(code not present)
|
|
upstream |
Needs triage
|
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 |