CVE-2021-43173
Published: 9 November 2021
In NLnet Labs Routinator prior to 0.10.2, a validation run can be delayed significantly by an RRDP repository by not answering but slowly drip-feeding bytes to keep the connection alive. This can be used to effectively stall validation. While Routinator has a configurable time-out value for RRDP connections, this time-out was only applied to individual read or write operations rather than the complete request. Thus, if an RRDP repository sends a little bit of data before that time-out expired, it can continuously extend the time it takes for the request to finish. Since validation will only continue once the update of an RRDP repository has concluded, this delay will cause validation to stall, leading to Routinator continuing to serve the old data set or, if in the initial validation run directly after starting, never serve any data at all.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
cfrpki Launchpad, Ubuntu, Debian |
impish |
Ignored
(end of life)
|
| jammy |
Not vulnerable
(1.4.2-1)
|
|
| kinetic |
Not vulnerable
(1.4.2-1)
|
|
| lunar |
Not vulnerable
(1.4.2-1)
|
|
| mantic |
Not vulnerable
(1.4.2-1)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(1.4.0-1)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
fort-validator Launchpad, Ubuntu, Debian |
focal |
Needs triage
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(1.5.3-1build1)
|
|
| kinetic |
Not vulnerable
(1.5.3-1build1)
|
|
| lunar |
Not vulnerable
(1.5.3-1build1)
|
|
| mantic |
Not vulnerable
(1.5.3-1build1)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(1.5.3-1)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
routinator Launchpad, Ubuntu, Debian |
trusty |
Ignored
(end of standard support)
|
| upstream |
Needs triage
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
rpki-client Launchpad, Ubuntu, Debian |
impish |
Ignored
(end of life)
|
| jammy |
Not vulnerable
(7.5-1build1)
|
|
| kinetic |
Not vulnerable
(7.5-1build1)
|
|
| lunar |
Not vulnerable
(7.5-1build1)
|
|
| mantic |
Not vulnerable
(7.5-1build1)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(7.5-1)
|
|
| xenial |
Ignored
(end of standard support)
|
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 | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |