CVE catalog
CVE-2021-3909
cfrpki: CVE-2021-3909
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.57% · Oct 25, 2026
OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. Specifically, the repository that OctoRPKI sends HTTP requests to will keep the connection open for a day before a response is returned, but does keep drip feeding new bytes to keep the connection alive.
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 |
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: