CVE catalog
CVE-2021-43173
cfrpki: CVE-2021-43173
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.40% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | cfrpki | bookworm | 1.4.4-1 | fixed |
| Debian | rpki-client | sid | 9.9-1 | fixed |
| Debian | rpki-client | forky | 9.9-1 | fixed |
| Debian | rpki-client | trixie | 9.5-1 | fixed |
| Debian | rpki-client | bookworm | 8.2-2 | fixed |
| Debian | fort-validator | sid | 1.7.0.experimental-1 | fixed |
| Debian | fort-validator | forky | 1.7.0.experimental-1 | fixed |
| Debian | fort-validator | trixie | 1.6.6-1 | fixed |
| Debian | fort-validator | trixie-security | 1.6.8-0+deb13u1 | fixed |
| Debian | fort-validator | bookworm | 1.5.4-1+deb12u1 | fixed |
| Ubuntu | fort-validator | pro | 1.1.1-2 | vulnerable |
| Ubuntu | fort-validator | pro | 1.1.2-1 | vulnerable |
| Ubuntu | fort-validator | pro | 1.1.3-1 | vulnerable |
| Ubuntu | fort-validator | pro | 1.2.0-1 | vulnerable |
| Ubuntu | fort-validator | pro | 1.2.0-1ubuntu0.1~esm1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | cfrpki | source | bookworm | 1.4.0-1 | not yet assigned | Not reported | Not reported |
| Debian | rpki-client | source | sid | 7.5-1 | not yet assigned | Not reported | Not reported |
| Debian | rpki-client | source | forky | 7.5-1 | not yet assigned | Not reported | Not reported |
| Debian | rpki-client | source | trixie | 7.5-1 | not yet assigned | Not reported | Not reported |
| Debian | rpki-client | source | bookworm | 7.5-1 | not yet assigned | Not reported | Not reported |
| Debian | fort-validator | source | sid | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Debian | fort-validator | source | forky | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Debian | fort-validator | source | trixie | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Debian | fort-validator | source | bookworm | 1.5.3-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [fort-validator]Unknown
Details (4)
1.5.4-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · bookworm; dsa · fort-validator · debian · 12
1.5.4-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · bookworm; dsa · fort-validator · debian · 12
1.6.6-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · bookworm; dsa · fort-validator · debian · 12
1.6.6-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · bookworm; dsa · fort-validator · debian · 12
- [octorpki]Unknown
Source package: [cfrpki]
Details (2)
1.4.4-1+b4· amd64 · bookwormFixed · Fixed:
1.4.0-1dsa · cfrpki · debian · bookworm; dsa · cfrpki · debian · 12
1.4.4-1+b4· arm64 · bookwormFixed · Fixed:
1.4.0-1dsa · cfrpki · debian · bookworm; dsa · cfrpki · debian · 12
- [rpki-client]Unknown
Details (4)
8.2-2+b1· amd64 · bookwormFixed · Fixed:
7.5-1dsa · rpki-client · debian · bookworm; dsa · rpki-client · debian · 12
8.2-2+b1· arm64 · bookwormFixed · Fixed:
7.5-1dsa · rpki-client · debian · bookworm; dsa · rpki-client · debian · 12
9.7-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
7.5-1dsa · rpki-client · debian · bookworm; dsa · rpki-client · debian · 12
9.7-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
7.5-1dsa · rpki-client · debian · bookworm; dsa · rpki-client · debian · 12
[Debian 13 (Trixie)]
- [fort-validator]Unknown
Details (5)
1.6.6-1· amd64 · trixieFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · 13
1.6.6-1· arm64 · trixieFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · 13
1.6.7-1~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · 13
1.6.7-1~bpo13+1· arm64 · trixie-backportsFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · 13
1.6.8-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.5.3-1dsa · fort-validator · debian · 13
- [rpki-client]Unknown
Details (4)
9.5-1· amd64 · trixieFixed · Fixed:
7.5-1dsa · rpki-client · debian · 13
9.5-1· arm64 · trixieFixed · Fixed:
7.5-1dsa · rpki-client · debian · 13
9.9-1~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
7.5-1dsa · rpki-client · debian · 13
9.9-1~bpo13+1· arm64 · trixie-backportsFixed · Fixed:
7.5-1dsa · rpki-client · debian · 13
Observed: