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 |