CVE-2020-13529
Published: 10 May 2021
An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.
Notes
| Author | Note |
|---|---|
| mdeslaur | FORCERENEW was temporarily disabled until proper support for RFC6704 is in place |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
systemd Launchpad, Ubuntu, Debian |
bionic |
Released
(237-3ubuntu10.49)
|
| focal |
Released
(245.4-4ubuntu3.10)
|
|
| groovy |
Released
(246.6-1ubuntu1.7)
|
|
| hirsute |
Released
(247.3-3ubuntu3.4)
|
|
| impish |
Released
(248.3-1ubuntu3)
|
|
| jammy |
Released
(248.3-1ubuntu3)
|
|
| kinetic |
Released
(248.3-1ubuntu3)
|
|
| lunar |
Released
(248.3-1ubuntu3)
|
|
| trusty |
Needed
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(229-4ubuntu21.31+esm1)
|
|
|
Patches: upstream: https://github.com/systemd/systemd/pull/20002 upstream: https://github.com/systemd/systemd/commit/38e980a6a5a3442c2f48b1f827284388096d8ca5 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.1 |
| Attack vector | Adjacent |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H |